Asme Sa 320 L7 Stud bolts and L7m Nuts Manufacturer and supppliers in india
ASTM A320 Bolts are made under the specification covering alloy steel and stainless steel materials and are intended for use under low temperature services. It covers forged, rolled and strain hardened fasteners. Viha Steel & Forging is a leading manufacturer and supplier of the different types of Astm A320 Grade L7 Bolts. The specification A320 covers L7, L43, B8, B8M and class 1 and class 2. These are also quenched and tempered, carbide solution treated and strain hardened. The sizes range from ¾ inches to 2 ½ inches.
The astm a320 L7 stud bolts have different tensile and yield strengths. The minimum tensile strength ranges from 75ksi to 125ksi depending on the different grades within the A320 specification. The a320 bolts and nuts also have minimum yield strengths range from 30ksi to 105ksi with elongation rates ranging from 12% to 30%. The material composition of the different grades varies with carbon, manganese, phosphorus, sulfur, silicon, chromium, nickel and molybdenum. The astm a320 l7m nuts have chromium ranges up to 18% and nickel ranges up to 14% with molybdenum ranges up to 3%. These material compositions make the A320 fasteners corrosion resistant, strong and ductile.
The applications of the ASTM A320 Stainless Steel Bolts are used in a number of applications. The power generation plants, food processing plants, oil and gas industrial applications, petroleum, marine, chemical, petrochemical, pharmaceutical and heat exchanger, boiler and condenser applications. As a leading manufacturer and supplier, we supply the ASTM A320 L7m Stud Bolts and other fasteners in various sizes. Please feel free to contact us for more information and pricing of the A320 specification fasteners.
Table Of Content
Standards |
Designation |
|---|---|
| ASTM | A320 : Grade L7M, L7, B8, B8M |
| Manufacturing Process | Cold Heading, Wire Drawing, Heat Treatment, Insert tapping, Inspection, Surface Plating, Packing |
| Thread Requirements of | UNC & UNF, ASME B1.1, Class 2A (Fastenal will inspect and accept parts with a 1A no-go gauge) |
| Delivery time | custom product will according to special requirement, Regular product is about 7-15 days |
| A320 Grade L7 Head | Square, Hex, Hex flange, Round, T-head, Flat & Triangular etc |
| Bolts Coatings | Cadmium, Black Oxide, Teflon, Galvanized, Zinc, Xylan, Others Upon Request |
| A320 Grade L7 Bolts Neck type | Square, Hex, Oval, Triangular & Knurled etc |
Melt Origin |
South America/East Europe/Japan/Korea |
A320 Grade L7 Dimensions |
ASME B18.3, B18.2.1 |
Product Origin |
Made in India |
Certification |
Dual Certified As per ASME & ASTM Codes |
Threads Configuration |
B1.13M 6h Metric Coarse Threads and ASME B1.1 2A/3A Inch Unified Threads |
Mandatory Requirements |
Free from Radioactive & Mercury Contamination |
Additional Certifications |
Merkblatt AD 2000 W2 Certified, PED 97/23/EC Certified |
Additional Requirements |
NACE MR0175 / MR0103 /ISO 15156 Compliance |
| A320 Grade L7 Samples | Yes |
| Payment Terms | Western Union, T/T, Paypal, Trade Assurance 30% deposit & balance before shipping or L/C |
| Grade L7 Alloy steel | AISI 4140/4142 Quenched and tempered |
|---|---|
| Grade L43 Alloy steel | AISI 4340 Quenched and tempered |
Buy ASTM A320 Stainless Steel Bolts at the lowest cost, Check online astm a320 l7m stud bolts Price List and grades
ASTM A320 Bolts |
Price |
alloy steel types astm a320 Grade l7/a193 b7 stud bolts |
US$ 1.35-US$ 1.45 / Piece |
astm a320 grade L7 bolts |
US$ 0.15-US$ 6.59 / Set |
astm a320 l7m stud bolt |
US$ 0.01-US$ 1.00 / Piece |
80% repeat orders from below countries
| China, United Kingdom -UK, Chile, South Africa | ASTM A320 Grade L7, L7m Stud Bolts |
| Philippines, UK, United Arab Emirates (UAE), Bahrain | Heavy Hex Bolts and Nut Teflons Structural Hex Bolts ASTM A320 |
| Malaysia, Philippines, Netherlands | Stud Bolts with Plate ASTM A320 L7 Full Threaded Rod |
| Sweden, Europe, Egypt, Oman | Stud Bolts with Nut and Washer ASTM A320 L7 |
| Malaysia, Spain, Australia, Germany | A320 Black 12 Point Special Flange Bolts for for Auto Parts |
| Singapore, Europe, Malaysia, USA | Heavy Hex Bolts PTFE ASTM A320 L7/L7m |
| Japan, Canada, Italy, Saudi Arabia (KSA) | Fully Threaded A320 L7 DIN976 M6 Threaded Rod Stud Bolts |
| Colombia, Malaysia, Turkey, South Africa | A320 Threaded Rods/ Stud Bolts |
| Taiwan, Mexico, Malaysia, Thailand | ASTM A320 Grade L7 Y L7m Stud Bolts |
| South Korea, Malaysia, UK, Bangladesh | Poly Tetra Fluoro Ethylene ASTM A320 L43 Stud Bolts |
| Romania, Poland, Singapore, Kuwait | A320 Black Oxide 12 Point Head Bolts |
| Malaysia, Canada, Iran, Singapore | ASTM A320 L7/ L7m Threaded Rods, Stud Bolts |
| Los Alamos -Mexico, Singapore, Norway, Finland | Stud Bolts ASTM A320 Grade. L7/L7m |
Astm A320 Grade L7 Bolts
ASTM A320 L7 Stud Bolts
astm a320 l7m nuts
a320 bolts and nuts
| Grade | Diameter | Tensile, ksi, min | Yield, ksi, min | Charpy Impact 20-ft-lbf @ temp | Elong, %, min | RA, %, min |
|---|---|---|---|---|---|---|
| Grade L7 | Up to 21⁄2 | 125 | 105 | -150° F | 16 | 50 |
| Grade L43 | Up to 4 | 125 | 105 | -150° F | 16 | 50 |
| Class 1: BC, B8C, B8M, B8P, B8F, B8T, B8LN, B8MLN | All | 75 | 30 | N/A | 30 | 50 |
| Class 1A: B8A, B8CA, B8MA, B8PA, B8FA, B8TA, B8LNA, B8MLNA | All | 75 | 30 | N/A | 30 | 50 |
| Class 2: B8, B8C, B8P, B8F, B8T | Up to 3⁄4 | 125 | 100 | N/A | 12 | 35 |
| 7⁄8 - 1 | 115 | 80 | N/A | 15 | 35 | |
| 11⁄8 - 11⁄4 | 105 | 65 | N/A | 20 | 35 | |
| 13⁄8 - 11⁄2 | 100 | 50 | N/A | 28 | 45 | |
| Class 2: B8M | Up to 3⁄4 | 110 | 95 | N/A | 15 | 45 |
| 7⁄8 - 1 | 100 | 80 | N/A | 20 | 45 | |
| 11⁄8 - 11⁄4 | 95 | 65 | N/A | 25 | 45 | |
| 13⁄8 - 11⁄2 | 90 | 50 | N/A | 30 | 45 |
| Element | L7 (AISI 4140) | L43 (AISI 4340) | B8 (AISI 304) | B8M (AISI 316) |
|---|---|---|---|---|
| Carbon | 0.38 - 0.48% | 0.38 - 0.43% | 0.08% max | 0.08% max |
| Manganese | 0.75 - 1.00% | 0.75 - 1.00% | 2.00% max | 2.00% max |
| Phosphorus, max | 0.035% | 0.035% | 0.045% | 0.045% |
| Sulfur, max | 0.040% | 0.040% | 0.030% | 0.030% |
| Silicon | 0.15 - 0.35% | 0.15 - 0.35% | 1.00% max | 1.00% max |
| Chromium | 0.80 - 1.10% | 0.70 - 0.90% | 18.0 - 20.0% | 16.0 - 18.0% |
| Nickel | 1.65 - 2.00% | 8.0 - 11.0% | 10.0 - 14.0% | |
| Molybdenum | 0.15 - 0.25% | 0.20 - 0.30% | 2.00 - 3.00% |
| Grade | Size | Tensile ksi, min | Yield, ksi, min | Elong, %, min | RA % min |
| B7 bolts | Up to 2-1/2 | 125 | 105 | 16 | 50 |
| L7 bolts | Up to 2-1/2 | 125 | 105 | 16 | 50 |
| bolts Grade | Test Temperature | |
|---|---|---|
| °F | °C | |
| Grade L7M, L70, L71, L72, L73 | -100 | -73 |
| Grade L7, L7A, L7B, L7C | -150 | -101 |
| Grade L43 | -150 | -101 |
| Grade L1 | -100 | -73 |
| bolts Grade | Nuts | Washers |
|---|---|---|
| Grade L7 | A194 Grade 4 or 7 | F436 |
| Grade L43 | A194 Grade 4 or 7 | F436 |
| B8 Class 1 | A194 Grade 8 | SS304 |
| B8M Class 1 | A194 Grade 8M | SS316 |
| B8 Class 2 | A194 Grade 8 | SS304 |
| B8M Class 2 | A194 Grade 8M | SS316 |
| Strain hardened nuts available as a supplementary requirement | ||
BOLTS DIA |
Torque FT-LBS |
||
30% Initial Torque |
70% Torque |
100% Final Torque |
|
1/2 |
16 |
36 |
52 |
9/16 |
23 |
53 |
75 |
5/8 |
31 |
73 |
104 |
3/4 |
55 |
129 |
184 |
7/8 |
71 |
166 |
237 |
1 |
107 |
249 |
356 |
1.1/8 |
127 |
297 |
424 |
1.1/4 |
179 |
417 |
596 |
1.3/8 |
186 |
435 |
622 |
1.1/2 |
246 |
574 |
821 |
1.9/16 |
168 |
392 |
560 |
1.5/8 |
191 |
445 |
636 |
1.3/4 |
240 |
561 |
801 |
1.7/8 |
298 |
696 |
994 |
2 |
366 |
853 |
1219 |
2.1/4 |
529 |
1234 |
1762 |
2.1/2 |
733 |
1709 |
2442 |
2.3/4 |
986 |
2300 |
3285 |
3 |
1289 |
3008 |
4297 |
bolts Diameter (D) |
Body Diameter (D) |
Across the Flats (F) |
Across the Corners © |
Head Height (H) |
Thread Lengths (T) |
|||||
|---|---|---|---|---|---|---|---|---|---|---|
MAX |
MIN |
MAX |
MIN |
MAX |
MIN |
MAX |
MIN |
< 6” |
> 6” |
|
1/2 |
0.515 |
0.482 |
0.875 |
0.85 |
1.01 |
0.969 |
0.364 |
0.302 |
1.25 |
1.5 |
5/8 |
0.642 |
0.605 |
1.062 |
1.031 |
1.227 |
1.175 |
0.444 |
0.378 |
1.5 |
1.75 |
3/4 |
0.768 |
0.729 |
1.25 |
1.212 |
1.443 |
1.383 |
0.524 |
0.455 |
1.75 |
2 |
7/8 |
0.895 |
0.852 |
1.438 |
1.394 |
1.66 |
1.589 |
0.604 |
0.531 |
2 |
2.25 |
1 |
1.022 |
0.976 |
1.625 |
1.575 |
1.876 |
1.796 |
0.7 |
0.591 |
2.25 |
2.5 |
1 1/8 |
1.149 |
1.098 |
1.812 |
1.756 |
2.093 |
2.002 |
0.78 |
0.658 |
2.5 |
2.75 |
1 1/4 |
1.277 |
1.223 |
2 |
1.938 |
2.309 |
2.209 |
0.876 |
0.749 |
2.75 |
3 |
1 3/8 |
1.404 |
1.345 |
2.188 |
2.119 |
2.526 |
2.416 |
0.94 |
0.81 |
3 |
3.25 |
1 1/2 |
1.531 |
1.47 |
2.375 |
2.3 |
2.742 |
2.622 |
1.036 |
0.902 |
3.25 |
3.5 |
1 3/4 |
1.785 |
1.716 |
2.75 |
2.662 |
3.175 |
3.035 |
1.196 |
1.054 |
3.75 |
4 |
2 |
2.039 |
1.964 |
3.125 |
3.025 |
3.608 |
3.449 |
1.388 |
1.175 |
4.25 |
4.5 |
2 1/4 |
2.305 |
2.214 |
3.5 |
3.388 |
4.041 |
3.862 |
1.548 |
1.327 |
4.75 |
5 |
2 1/2 |
2.559 |
2.461 |
3.875 |
3.75 |
4.474 |
4.275 |
1.708 |
1.479 |
5.25 |
5.5 |
2 3/4 |
2.827 |
2.711 |
4.25 |
4.112 |
4.907 |
4.688 |
1.869 |
1.632 |
5.75 |
6 |
3 |
3.081 |
2.961 |
4.625 |
4.475 |
5.34 |
5.102 |
2.06 |
1.815 |
6.25 |
6. |
largest ASTM A320 Grade L7 Studs stockist in India, we offer SA 320 gr L7 Hex Bolt in almost all sizes
| d | s | e | m |
|---|---|---|---|
| M1.2 | 3.0000 | 3.2900 | 1.0000 |
| M1.4 | 3.0000 | 3.2900 | 1.2000 |
| M1.6 | 3.2000 | 3.4800 | 1.3000 |
| M1.7 | 3.5000 | 3.8200 | 1.4000 |
| M2 | 4.0000 | 4.3200 | 1.6000 |
| M2.3 | 4.5000 | 4.9500 | 1.8000 |
| M2.5 | 5.0000 | 5.4500 | 2.0000 |
| M2.6 | 5.0000 | 5.5100 | 2.0000 |
| M3 | 5.5000 | 6.0100 | 2.4000 |
| M3.5 | 6.0000 | 6.0100 | 2.8000 |
| M4 | 7.0000 | 7.6600 | 3.2000 |
| M5 | 8.0000 | 8.7600 | 4.0000 |
| M6 | 10.0000 | 11.0500 | 5.0000 |
| M7 | 11.0000 | 12.1200 | 5.5000 |
| M8 | 13.0000 | 14.3800 | 6.5000 |
| M10 | 17.0000 | 18.9000 | 8.0000 |
| M12 | 19.0000 | 21.1000 | 10.0000 |
| M14 | 22.0000 | 24.4900 | 11.0000 |
| M16 | 24.0000 | 26.7500 | 13.0000 |
| M18 | 27.0000 | 29.5600 | 15.0000 |
| M20 | 30.0000 | 32.9500 | 16.0000 |
| M22 | 32.0000 | 35.0300 | 18.0000 |
| M24 | 36.0000 | 39.5500 | 19.0000 |
| M27 | 41.0000 | 45.2000 | 22.0000 |
| M30 | 46.0000 | 50.8500 | 24.0000 |
| M33 | 50.0000 | 55.3700 | 26.0000 |
| M36 | 55.0000 | 60.7900 | 29.0000 |
| M39 | 60.0000 | 66.4400 | 31.0000 |
| M42 | 65.0000 | 71.3000 | 34.0000 |
| M45 | 70.0000 | 76.9500 | 36.0000 |
| M48 | 75.0000 | 82.6000 | 38.0000 |
| M52 | 80.0000 | 88.2500 | 42.0000 |
| M56 | 85.0000 | 95.0700 | 45.0000 |
| M60 | 90.0000 | 100.7200 | 48.0000 |
| M64 | 95.0000 | 106.3700 | 51.0000 |
| M68 | 100.0000 | 112.0200 | 54.0000 |
| M72 | 105.0000 | 117.6700 | 58.0000 |
| M76 | 110.0000 | 123.3200 | 61.0000 |
| M80 | 115.0000 | 128.9700 | 64.0000 |
| M85 | 120.0000 | 133.1100 | 68.0000 |
| M90 | 130.0000 | 145.7700 | 72.0000 |
| M95 | 135.0000 | 151.4200 | 76.0000 |
| M100 | 145.0000 | 162.7200 | 80.0000 |
| M110 | 155.0000 | 174.0200 | 88.0000 |
| M115 | 165.0000 | 185.3200 | 92.0000 |
| M120 | 170.0000 | 190.9700 | 96.0000 |
| M125 | 180.0000 | 202.2700 | 100.0000 |
| M130 | 185.0000 | 207.7500 | 104.0000 |
| M135 | 190.0000 | 213.4000 | 108.0000 |
| M140 | 200.0000 | 224.7000 | 112.0000 |
| M145 | 210.0000 | 236.0000 | 116.0000 |
| M150 | 210.0000 | 236.0000 | 120.0000 |
For Impact Testing ASTM A320 Temperature Requirement
| Size of specimen, mm | Minimum Impact Value Required for Average of Each Set of Three Specimens, ft.lbf(J) | Minimum Impact Value permitted for One Specimen Only of a Set, ft.lbf(J) |
|---|---|---|
| All Grade Except L1A | ||
| 10 by 10 | 20 [27] | 15 [20] |
| 10 by 7.5 | 16 [22] | 12 [16] |
| Grade L1 | ||
| 10 by 10 | 40 [54] | 30 [41] |
| 10 by 7.5 | 32 [44] | 24 [32] |
| d | b | c l<125 | c l<125<200 | c l 200> |
|---|---|---|---|---|
| M3 | 7.5000 | 12.0000 | 18.0000 | |
| M4 | 10.0000 | 14.0000 | 20.0000 | |
| M5 | 12.5000 | 16.0000 | 22.0000 | |
| M6 | 15.0000 | 18.0000 | 24.0000 | 37.0000 |
| M7 | 17.5000 | 20.0000 | 26.0000 | 39.0000 |
| M8 | 20.0000 | 22.0000 | 28.0000 | 41.0000 |
| M10 | 25.0000 | 26.0000 | 32.0000 | 45.0000 |
| M12 | 30.0000 | 30.0000 | 36.0000 | 49.0000 |
| M14 | 35.0000 | 34.0000 | 40.0000 | 53.0000 |
| M16 | 40.0000 | 38.0000 | 44.0000 | 57.0000 |
| M18 | 45.0000 | 42.0000 | 48.0000 | 61.0000 |
| M20 | 50.0000 | 46.0000 | 52.0000 | 65.0000 |
| M22 | 55.0000 | 50.0000 | 56.0000 | 69.0000 |
| M24 | 60.0000 | 54.0000 | 60.0000 | 73.0000 |
| M27 | 67.5000 | 60.0000 | 66.0000 | 79.0000 |
| M30 | 75.0000 | 66.0000 | 72.0000 | 85.0000 |
| M33 | 82.5000 | 72.0000 | 78.0000 | 91.0000 |
| M36 | 90.0000 | 78.0000 | 84.0000 | 97.0000 |
**All measurements in millimeters**
bolts NOMINAL SIZE (D) |
BODY DIAMETER |
HEAD THICKNEASTM A193 |
ACROASTM A193 THE FLATS |
ACROASTM A193 CORNERS |
||||
|---|---|---|---|---|---|---|---|---|
D (MAX) |
D (MIN) |
H (MAX) |
H (MIN) |
F (MAX) |
F (MIN) |
C (MAX) |
C (MIN) |
|
m10 |
10.00 |
9.78 |
6.63 |
6.17 |
17.00 |
15.73 |
18.48 |
17.77 |
m12 |
12.00 |
11.73 |
7.76 |
4.24 |
19.00 |
17.73 |
20.78 |
20.03 |
m14 |
14.00 |
13.73 |
9.09 |
8.51 |
22.00 |
20.67 |
24.25 |
23.35 |
m16 |
16.00 |
15.73 |
10.32 |
9.68 |
24.00 |
23.67 |
27.71 |
26.75 |
m20 |
20.00 |
19.67 |
12.88 |
12.12 |
30.00 |
29.16 |
34.64 |
32.95 |
m24 |
24.00 |
23.67 |
15.44 |
14.56 |
36.00 |
35.00 |
41.57 |
39.55 |
m30 |
30.00 |
29.67 |
19.48 |
17.92 |
46.00 |
45.00 |
53.12 |
50.85 |
m36 |
36.00 |
35.61 |
23.38 |
21.63 |
55.00 |
53.80 |
63.51 |
60.79 |
m42 |
42.00 |
41.38 |
26.97 |
25.03 |
65.00 |
62.90 |
75.06 |
71.71 |
m48 |
48.00 |
47.38 |
31.07 |
28.93 |
75.00 |
72.60 |
86.60 |
82.76 |
m56 |
56.00 |
55.26 |
36.2 |
33.80 |
85.00 |
82.20 |
98.15 |
93.71 |
m64 |
64.00 |
63.26 |
41.32 |
38.68 |
95.00 |
91.80 |
109.70 |
104.65 |
m72 |
72.00 |
71.26 |
46.45 |
43.55 |
105.00 |
101.40 |
121.24 |
115.60 |
m80 |
80.00 |
79.26 |
51.58 |
48.42 |
115.00 |
111.00 |
132.72 |
126.54 |
m90 |
90.00 |
89.13 |
57.74 |
54.26 |
130.00 |
125.50 |
150.11 |
143.07 |
m100 |
90.00 |
99.13 |
63.9 |
60.10 |
145.00 |
140.00 |
167.43 |
159.60 |
We Keep Bulk Stock of ASTM A320 Bolts and Nuts at our stockyard, contact us for Grade L7m Material Free Sample & stock list
PTFE Coated ASTM A320 L7 Stud Bolts and nuts Torque FT-LBS (Cold Service)
| BOLTS SIZE |
Torque FT-LBS | ||
| 30% Initial Torque |
70% Torque |
100% Final Torque |
|
| 1/2 | 17 | 40 | 57 |
| 9/16 | 25 | 58 | 83 |
| 5/8 | 34 | 80 | 114 |
| 3/4 | 61 | 142 | 203 |
| 7/8 | 98 | 229 | 327 |
| 1 | 147 | 343 | 490 |
| 1.1/8 | 216 | 503 | 719 |
| 1¼ | 303 | 707 | 1011 |
| 1.3/8 | 411 | 959 | 1371 |
| 1½ | 543 | 1267 | 1809 |
| 1.9/16 | 618 | 1441 | 2059 |
| 1.5/8 | 702 | 1637 | 2339 |
| 1¾ | 883 | 2060 | 2943 |
| 1.7/8 | 1096 | 2557 | 3653 |
| 2 | 1344 | 3135 | 4479 |
| 2¼ | 1943 | 4533 | 6476 |
| 2½ | 2692 | 6282 | 8974 |
PTFE Coated SA 320 Grade L7 Stud Bolts and nuts Torque Nm (Cold Service)
| BOLTS SIZE |
Torque Nm | ||
| 30% Initial Torque |
70% Torque |
100% Final Torque |
|
| 1/2 | 23 | 54 | 77 |
| 9/16 | 34 | 79 | 113 |
| 5/8 | 46 | 108 | 155 |
| 3/4 | 83 | 193 | 275 |
| 7/8 | 133 | 310 | 443 |
| 1 | 199 | 465 | 664 |
| 1.1/8 | 293 | 682 | 975 |
| 1¼ | 411 | 959 | 1371 |
| 1.3/8 | 557 | 1300 | 1859 |
| 1½ | 736 | 1718 | 2453 |
| 1.9/16 | 838 | 1954 | 2792 |
| 1.5/8 | 952 | 2219 | 3171 |
| 1¾ | 1197 | 2793 | 3990 |
| 1.7/8 | 1486 | 3467 | 4953 |
| 2 | 1822 | 4250 | 6073 |
| 2¼ | 2634 | 6146 | 8780 |
| 2½ | 3650 | 8517 | 12167 |
| bolts Tensile Class | Test Temperature °F [°C] | Stress, min | Time to Rupture, min, h [Note] | Elongation, min, % | |
|---|---|---|---|---|---|
| ksi | Mpa | ||||
| A, B and C | 1200 [650] | 56 | 385 | 100 | 5 |
| D | 1200 [650] | 40 | 275 | 100 | 5 |
Bulk Stock Of ASTM A320 Grade L7 Stud Bolts
ASTM A320 Anchor Bolts |
ASTM A 320 L7 Studs |
ISO Approved ASTM A320 U Bolts |
ASTM A320 J Bolts |
ASTM A 320 Eye Bolts |
ASME SA320 L7M Grub Screw |
ASTM A 320 L7 Step Bolts |
A320 Gr L7 Stud Bolts |
ASTM A 320 L7 Heavy Hex Bolts |
A320 L7M Nuts |
ASTM A320 L7 Lag Bolts |
ASTM A320 Stud Bolts |
ASTM A320 L7M Tie Rod |
A320 L7 Hex Nut |
ASTM A320 Grade L7 Threaded Rod |
L7M Hanger Bolts |
SA320 Nuts |
ASTM A320 L7M Stud Bolts |
ASTM A320 Grade L7 Stud Bolts |
A320 Gr L7 Stud Bolts |
A320 L7 Hex Nut |
A320 L7M Shoulder Bolts |
A320 L7M Stainless Steel Bolts |
A 320 Plow Bolts |
find ASTM A320 Gr L7 Stud Bolt Specification and dimensions chart here
| bolts Tensile Class | Brinell Hardness Number | Approximate Rockwell Hardness B & C | |
| min | max | ||
| A, B and C | 248 - 341 | 24 HRC | 27 HRC |
| D | 248 - 321 | 24 HRC | 35 HRC |