The Screw,tapping, cataloged under National Stock Number 5305-01-159-2771, 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-159-2771 |
| Primary Part Number | 11503284 |
| Item Name | Screw,tapping |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | General Motors Llc Dba General Motors Llc |
| Status | ACTIVE |
| Nonmachine Nominal Thread Diameter | 4.2 MILLIMETERS MM |
| Head Height | 0.9 MILLIMETERS MINIMUM AND 1.3 MILLIMETERS MAXIMUM MM |
| Fastener Length | 12.20 MILLIMETERS MINIMUM AND 13.00 MILLIMETERS MAXIMUM MM |
| Surface Treatment Document and Classification | G-4251-M,CODE 50,FSCM 11862 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Nonmachine Thread Style | WIDE FLUTE (TYPE H OR BT) |
| Material Document and Classification | GM 6172-M,FSCM 11862 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Features Provided | CASEHARDENED |
| Head Style | DRIVE |
| Surface Treatment | CHROMIUM OVERALL |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Material | STEEL OVERALL |
| Head Diameter | 9.5 MILLIMETERS MINIMUM AND 9.9 MILLIMETERS MAXIMUM MM |
| 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 |
|---|---|
| 11503421 | General Motors Llc Dba General Motors Llc (USA) |
| 11503284 PRIMARY | General Motors Llc Dba General Motors Llc (USA) |
| Reference | Meaning |
|---|---|
| 11503593 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
| 11503284 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
| 11503421 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
NSN 5305-01-159-2771 is a Screw,tapping, manufactured by General Motors Llc Dba General Motors Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-159-2771 has 2 manufacturer part numbers on file: 11503421 (General Motors Llc Dba General Motors Llc), 11503284 (General Motors Llc Dba General Motors Llc).
Key specifications for 11503284: Nonmachine Nominal Thread Diameter: 4.2 MILLIMETERS MM; Head Height: 0.9 MILLIMETERS MINIMUM AND 1.3 MILLIMETERS MAXIMUM MM; Fastener Length: 12.20 MILLIMETERS MINIMUM AND 13.00 MILLIMETERS MAXIMUM MM; Surface Treatment Document and Classification: G-4251-M,CODE 50,FSCM 11862 MFR REF SINGLE 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.