Hexagon Socket Button Head Cap Screws(Inch thread)
Our production range of Alloy steel & Stainless steel Hexagon Socket Button Head Cap Screws per ASME B18.3-2002 is from #2 to 3/4". The UNC or UNF thread is 3A. Some people call button head cap screws as pan head screws. We have full size range of socket button head cap screws in stock so that we can service our customers rapidly.
Socket button head cap screws are mostly used in the surface of machinery or other component parts. The crucial features of button head cap screws are the wide load bearing surface and resistance to looseness. Socket button head screws are able to provide more space with limited hardware as well. The mechanical property of TUZ Socket button head cap screws shall conform to the requirement of ASTM B18.3-2012 ; for instance, the hardness is HRC 39-44 and the tensile strength shall be more than 145000 PSI.
Moreover, we can produce socket button flange head screws or torx button head screws per standard or your own print.
Surface Treatment:
- Item：Hex Socket Button Head Cap Screw, Alloy Steel Hex Socket Button head Cap Screw, Hex Socket Button head with Flange Screw, Torx Button Head Cap Screw, Stainless Steel Hex Socket Button head Cap Screw
- According To：ASME B18.3-2002
- Material：Alloy Steel SCM435、Stainless Steel 304
- Hardness：HRC 38~44
- Surface Treatment : Black Oxide, Black phosphate plated, Bright Zinc plated, CR3+ plated, Black Zinc plated, Nickel plated,chrome plating ,GEOMAT, Nylon or ND patch
- Screw Threads：ANSI B1.1 UNC,UNF
- Class of Thread：ANSI B1.1 class 3A
- Quality Control : Salt Spray test, hardness test, tensile load test,PPAP report available
- Packing : Bulk packing, small box packing, customized packing
Unit：inch
| D | A | H | S | J | T | F | L | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Nominal Size or Basic Screw Diameter | Head Diameter | Head Height | Hexagon Head Size Height | Hexagon Socket Size | Key Engage-ment | Fillet Transition Diameter | Maximum Standard Length | |||
| Max. | Min. | Max. | Min. | Ref. | Nom. | Min. | Max. | Min. | Nom. | |
| ＃6 0.1380 | 0.262 | 0.250 | 0.073 | 0.063 | 0.015 | 5/64 0.078 | 0.044 | 0.158 | 0.148 | 5/8 |
| ＃8 0.1640 | 0.312 | 0.298 | 0.087 | 0.077 | 0.015 | 3/32 0.094 | 0.052 | 0.194 | 0.184 | 3/4 |
| ＃10 0.1900 | 0.361 | 0.347 | 0.101 | 0.091 | 0.020 | 1/8 0.125 | 0.070 | 0.220 | 0.210 | 1 |
| 1/4 0.2500 | 0.437 | 0.419 | 0.132 | 0.122 | 0.031 | 5/32 0.156 | 0.087 | 0.290 | 0.280 | 1 |
| 5/16 0.3125 | 0.547 | 0.527 | 0.166 | 0.152 | 0.031 | 3/16 0.188 | 0.105 | 0.353 | 0.343 | 1 |
| 3/8 0.3750 | 0.656 | 0.636 | 0.199 | 0.185 | 0.031 | 7/32 0.219 | 0.122 | 0.415 | 0.405 | 1 1/4 |
| 1/2 0.5000 | 0.875 | 0.851 | 0.265 | 0.245 | 0.046 | 5/16 0.312 | 0.175 | 0.560 | 0.540 | 2 |
| 5/8 0.6250 | 1.000 | 0.970 | 0.331 | 0.311 | 0.062 | 3/8 0.375 | 0.210 | 0.685 | 0.665 | 2 |