Astm F568 Grade 8.8.3 B Fasteners Specification
Astm F568 Grade 8.8.3 B Fasteners Properties
| Chemical Properties | ||||||||
|---|---|---|---|---|---|---|---|---|
| C | Mn | P | S | Si | Cr | Mo | Ni | Cu |
| 0.36-0.50 | 0.67-0.93 | 0.06-0.125 | 0.055 Max | 0.25-0.55 | 0.47-0.83 | 0.07 Max | 0.47-0.83 | 0.17-0.43 |
| Mechanical Properties | ||||
|---|---|---|---|---|
| Yeild strength | Tensile strength | Elongation | Reduction | Hardness |
| Mpa | Mpa | % | % | HRC |
| min | min | min | min | |
| 660 | 830 | 12 | 35 | 23-34 |
| Proof Load Values, kN | ||||||
|---|---|---|---|---|---|---|
| Nominal Product Diameter & Thread Pitch | ||||||
| M20 X 2.5 | M22 X 2.5 | M24 X 3 | M27 X 3 | M30 X 3.5 | M36 X 4 | |
| Method 1 | 147 | 182 | 212 | 275 | 337 | 490 |
| Method 2 | 162 | 200 | 233 | 303 | 370 | 539 |
| M42 X 4.5 | M48 X 5 | M56 X 5.5 | M64 X 6 | M72 X 6 | M80 X 6 | |
| Method 1 | 672 | 882 | 1220 | 1610 | 2050 | 2600 |
| Method 2 | 730 | 970 | 1340 | 1790 | 2280 | 2860 |
| Heat Treatment | |||
|---|---|---|---|
| Quenched & Tempered @ 425°C | |||
| Equivalent Designation | ||
|---|---|---|
| UNS | ||
| 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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