The Setscrew, cataloged under National Stock Number 5305-00-257-1976, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Cooper Cameron Corp Cooper Bessemer Reciprocating Products Div. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-257-1976 |
| Primary Part Number | SF63-8X1 1-2 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Cooper Cameron Corp Cooper Bessemer Reciprocating Products Div |
| Status | ACTIVE |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Hardness Rating | 30.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Material | STEEL OVERALL |
| Point Style | FULL DOG |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Thread Length | 1.500 INCHES MAXIMUM IN |
| Width Between Flats | 0.362 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| Nondefinitive Spec/std Data | 1 TYPE AND 5 STYLE |
| Thread Class | 3A A |
| Features Provided | CASEHARDENED |
| Fastener Length | 1.438 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN |
| Head Height | 0.270 INCHES MINIMUM AND 0.293 INCHES MAXIMUM IN |
| Thread Quantity Per Inch | 16 |
| Head Style | SQUARE |
| Thread Direction | RIGHT-HAND |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| SF63-8X1 1-2 | Cooper Cameron Corp Cooper Bessemer Reciprocating Products Div (USA) |
| FFS103TYPE1STYLE5 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
NSN 5305-00-257-1976 is a Setscrew, manufactured by Cooper Cameron Corp Cooper Bessemer Reciprocating Products Div, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-00-257-1976 has 2 cross-referenced part numbers: SF63-8X1 1-2 (Cooper Cameron Corp Cooper Bessemer Reciprocating Products Div), FFS103TYPE1STYLE5 (Federal Specifications Promulgated by General Services Administration Washington DC).
There are 8 known substitutes for 5305-00-257-1976: 5305-00-010-6850, 5305-00-011-3036, 5305-00-011-3060 and 5 more. Verify interchangeability with system specifications before substitution.
Key specifications for SF63-8X1 1-2: Nominal Thread Diameter: 0.375 INCHES IN; Hardness Rating: 30.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Material: STEEL OVERALL. 17 total characteristics are documented in the Federal Logistics Information System.