The Screw,tapping, cataloged under National Stock Number 5305-01-186-1208, 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 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-186-1208 |
| Primary Part Number | 172478 |
| Item Name | Screw,tapping |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | General Motors Llc Dba General Motors Llc |
| Status | ACTIVE |
| Nonmachine Nominal Thread Diameter | 0.375 INCHES IN |
| Head Height | 0.270 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN |
| Fastener Length | 0.470 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | -4252-M,FSCM 11862 FED SPEC ALL TREATMENT RESPONSES OR G-4342-M CODE 20,FSCM 11862 MFR REF 2ND TREATMENT RESPONSE OVERALL |
| Nonmachine Thread Style | THRU SLOT (TYPE D) |
| Material Document and Classification | G-6010-M,FSCM 11862 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Features Provided | CASEHARDENED |
| Head Style | HEXAGON |
| Width Between Flats | 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OR ZINC OVERALL |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 172478 PRIMARY | General Motors Llc Dba General Motors Llc (USA) |
| Reference | Meaning |
|---|---|
| 172478 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
NSN 5305-01-186-1208 is a Screw,tapping, manufactured by General Motors Llc Dba General Motors Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-186-1208 has 1 manufacturer part number on file: 172478 (General Motors Llc Dba General Motors Llc).
Key specifications for 172478: Nonmachine Nominal Thread Diameter: 0.375 INCHES IN; Head Height: 0.270 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN; Fastener Length: 0.470 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN; Surface Treatment Document and Classification: -4252-M,FSCM 11862 FED SPEC ALL TREATMENT RESPONSES OR G-4342-M CODE 20,FSCM 11862 MFR REF 2ND TREATMENT RESPONSE OVERALL. 12 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.