The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-00-022-0493, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is General Motors Corp. Government technical data includes 19 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-022-0493 |
| Primary Part Number | 220493 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | General Motors Corp |
| Status | ACTIVE |
| Thread Class | 2A A |
| Hardness Rating | 96.0 ROCKWELL B MINIMUM AND 104.0 ROCKWELL B MAXIMUM OVERALL |
| Minimum Yield Strength | 85000 POUNDS PER SQUARE INCH LBS |
| Material Document and Classification | QQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Minimum Tensile Strength | 95000 POUNDS PER SQUARE INCH LBS |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP 1035 OVERALL |
| Locking Feature | DISTORTIONS BEARING SURFACE OF HEAD |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Features Provided | FINISHED HEAD |
| Fastener Length | 0.718 INCHES MINIMUM AND 0.782 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Head Style | HEXAGON |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Thread Length | 0.607 INCHES MINIMUM AND 0.718 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 1 CL 2 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 1 CL2 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| Surface Treatment | CADMIUM OR ZINC OVERALL |
| Head Height | 0.188 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 220493 | General Motors Corp (USA) |
| MS35763-817 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
NSN 5305-00-022-0493 is a Screw,cap,hexagon Head, manufactured by General Motors Corp, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-00-022-0493 has 2 cross-referenced part numbers: 220493 (General Motors Corp), MS35763-817 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).
There are 3 known substitutes for 5305-00-022-0493: 5305-01-072-5271, 5305-01-099-7014, 5340-01-670-8236. Verify interchangeability with system specifications before substitution.
Key specifications for 220493: Thread Class: 2A A; Hardness Rating: 96.0 ROCKWELL B MINIMUM AND 104.0 ROCKWELL B MAXIMUM OVERALL; Minimum Yield Strength: 85000 POUNDS PER SQUARE INCH LBS; Material Document and Classification: QQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 19 total characteristics are documented in the Federal Logistics Information System.