The Screw,cap,socket Head, cataloged under National Stock Number 5305-00-274-2649, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Warner Electric Brake and Clutch Co Hq. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5305-00-274-2649 |
| Primary Part Number | AC1056 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Warner Electric Brake and Clutch Co Hq |
| Status | CANCELLED |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Series Designator | UNF |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL |
| Thread Class | 3A A |
| Material | STEEL OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Width Across Flats | 0.219 INCHES NOMINAL IN |
| Head Diameter | 0.429 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Head Height | 0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Head Style | FLAT CHAMFER |
| Internal Drive Style | HEXAGON |
| Fastener Length | 1.485 INCHES MINIMUM AND 1.530 INCHES MAXIMUM IN |
| Minimum Yield Strength | 130000 POUNDS PER SQUARE INCH LBS |
| Thread Quantity Per Inch | 24 |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Thread Length | 0.968 INCHES MINIMUM IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| AC1056 | Warner Electric Brake and Clutch Co Hq (USA) |
| GM138234 | General Motors Corp (USA) |
| PC138234 | Power Components (deutschland) Gmbh (DEU) |
| AC1056 | Lift Parts Mfg Co Inc Div of Echlin Mfg Co the (USA) |
| MS35456-37 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| 138234 | Rolls-Royce Solutions America Inc (USA) |
| 138234 | Euclid Inc (USA) |
| 9084 | Van Norman Machine Co Inc Sub of Winvan Inc (USA) |
| 138234 | General Motors Corp (USA) |
| AC1056 | Federal Mogul Corp Sub Wagner Brake Moog Automotive Div (USA) |
| 138234 | Terex Corp (USA) |
NSN 5305-00-274-2649 is a Screw,cap,socket Head, manufactured by Warner Electric Brake and Clutch Co Hq, classified under FSC 5305 (No Item Name Available). Status: cancelled.
NSN 5305-00-274-2649 has 11 cross-referenced part numbers: AC1056 (Warner Electric Brake and Clutch Co Hq), GM138234 (General Motors Corp), PC138234 (Power Components (deutschland) Gmbh), AC1056 (Lift Parts Mfg Co Inc Div of Echlin Mfg Co the), MS35456-37 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M) and 6 more.
There are 12 known substitutes for 5305-00-274-2649: 5935-00-018-1199, 2910-00-218-1301, 3030-00-230-3589 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for AC1056: Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL; Thread Series Designator: UNF; Hardness Rating: 36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL; Thread Class: 3A A. 17 total characteristics are documented in the Federal Logistics Information System.
NSN 5305-00-274-2649 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.