The Screw,assembled Washer, cataloged under National Stock Number 5305-01-157-7388, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is General Motors Llc Dba General Motors Llc. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-157-7388 |
| Primary Part Number | 9431663 |
| Item Name | Screw,assembled Washer |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | General Motors Llc Dba General Motors Llc |
| Status | ACTIVE |
| Head Height | 0.203 INCHES MINIMUM AND 0.218 INCHES MAXIMUM IN |
| Fastener Length | 0.720 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | G-4342-M,CODE 20U32,FSCM 11862 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Primary Washer Outside Diameter | 0.620 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN |
| Thread Length | 0.578 INCHES MINIMUM AND 0.682 INCHES MAXIMUM IN |
| Hardness Rating | 44.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM PRIMARY WASHER |
| Material Document and Classification | SAE ASSN STD ALL MATERIAL RESPONSES PRIMARY WASHER |
| Material Document and Classification | SAE ASSN STD ALL MATERIAL RESPONSES FASTENER |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | PAN |
| Primary Washer Style | SPRING TENSION |
| Thread Direction | RIGHT-HAND |
| Primary Washer Material Thickness | 0.052 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| Surface Treatment | ZINC OVERALL |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Thread Series Designator | UNRC |
| Washer Quantity | 1 |
| Head Diameter | 0.594 INCHES MINIMUM AND 0.615 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 9431663 PRIMARY | General Motors Llc Dba General Motors Llc (USA) |
| Reference | Meaning |
|---|---|
| 9431663 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
NSN 5305-01-157-7388 is a Screw,assembled Washer, manufactured by General Motors Llc Dba General Motors Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-157-7388 has 1 manufacturer part number on file: 9431663 (General Motors Llc Dba General Motors Llc).
Key specifications for 9431663: Head Height: 0.203 INCHES MINIMUM AND 0.218 INCHES MAXIMUM IN; Fastener Length: 0.720 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN; Surface Treatment Document and Classification: G-4342-M,CODE 20U32,FSCM 11862 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Primary Washer Outside Diameter: 0.620 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN. 20 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.