Astm A320 Grade L7B Bolts Specification
Astm A320 Grade L7B Bolts Properties
| Chemical Properties | ||||||
|---|---|---|---|---|---|---|
| C | Si | Mn | P | S | Cr | Mo |
| 0.35-0.40 | 0.15-0.35 | 0.70-0.90 | 0.035 Max | 0.040 Max | 0.80-1.10 | 0.15-0.25 |
| Mechanical Properties | |||
|---|---|---|---|
| Yeild strength | Tensile strength | Elongation | Reduction |
| Mpa | Mpa | % | % |
| min | min | min | min |
| 725 | 860 | 16 | 50 |
| Impact Properties | |
|---|---|
| Joules | Temperature |
| 27 | -101°C |
| Heat Treatment | ||||||
|---|---|---|---|---|---|---|
| Quenched & Tempered @620°C min. |
| Equivalent Designation | ||||
|---|---|---|---|---|
| UNS AISI 4137 | ||||
| EN number | ||||
| EN Name | ||||
| W.Nr. | ||||
| SS | ||||
| AFNOR |
Cold Forged Fasteners, Hot Forged Fastener, C-Machined Components / Fasteners, CNC Machined Components / Fasteners, Custom Machined Components / Fasteners, Threaded Components / Fasteners, Non-Threaded Components / Fasteners, Bar Stock Machined Components / Fasteners.
Metric Range from M1.0 to M100 and Imperial Range from 1/16 inch to 4 inch.
Coarse, Fine, UNC, UNF, UN, BSW, Acme Threads with Half Thread, Full Thread & Double End Thread Configuration.
Hexagon Bolts
- ANSI B18.2.1
- ANSI B18.2.3.1M
- DIN 931
- DIN 933
- BS 1768
- UNI 5731
- UNI 5737
- UNI 5739
- ISO 4014
- ISO 4017
- BS 1769
- BS 3692
Socket/Slotted Set Screws
- DIN 913
- DIN 914
- DIN 915
- DIN 916
- DIN 551
- DIN 553
- DIN 438
- BS 4168
Socket/Slotted Countersunk Screws
- DIN 963
- DIN 7991
- BS 4168
- BS 1981
- BS 483
- BS 2470
Socket Cap Screws
- ANSI B18.3
- B18.3.1M
- DIN 912
- DIN 6912
- DIN 7984
- ANSI B18.3
- ISO 4762
- UNI 5931
- BS 2470
- BS 4168
Stud Bolts
- ASME B18.2.1
- DIN 976
- DIN 938
- DIN 939
- DIN 2510
- BS 4439
- BS 2693
- BS4882
Nuts
- ANSI B18.2.2
- ANSI B18.2.4.6M
- DIN 934
- DIN 936
- BS 1768
- BS 1769
- BS 1083
- BS 3692
- ISO 4032
- ISO 4033
- ISO 4035
- UNI 5587
- UNI 5588
- UNI 5589
Washers
- ASME B18.22.1
- ASTM F436
- ISO 7089
- DIN 125
- DIN 9021
- BS 4320
- BS 3410
- DIN 127
- BS 4464
- BS 1802
- UNI 6952
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