The Screw,assembled Washer, cataloged under National Stock Number 5305-01-159-2780, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-159-2780 |
| Primary Part Number | 11502770 |
| Item Name | Screw,assembled Washer |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | General Motors Llc Dba General Motors Llc |
| Status | ACTIVE |
| Nonmachine Nominal Thread Diameter | 4.2 MILLIMETERS MM |
| Fastener Length | 38.70 MILLIMETERS MINIMUM AND 41.30 MILLIMETERS MAXIMUM MM |
| Surface Treatment Document and Classification | GM 4435-M CODE A FSCM 11862 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Pitch in Millimeters | 1.41 |
| Primary Washer Outside Diameter | 7.37 MILLIMETERS MINIMUM AND 7.62 MILLIMETERS MAXIMUM MM |
| Thread Length | 25.0 MILLIMETERS MINIMUM MM |
| Nonmachine Thread Style | GIMLET POINT (TYPE A, AB OR BA) |
| Material Document and Classification | SAE ASSN STD ALL MATERIAL RESPONSES PRIMARY WASHER |
| Material Document and Classification | GM 6010-M FSCM 11862 MFR REF SINGLE MATERIAL RESPONSE FASTENER |
| Head Style | FLAT TOP ELEVATOR |
| Primary Washer Style | FLAT |
| Thread Direction | RIGHT-HAND |
| Primary Washer Material Thickness | 0.35 MILLIMETERS MINIMUM AND 0.50 MILLIMETERS MAXIMUM MM |
| Surface Treatment | ZINC OVERALL |
| Internal Drive Style | CROSS RECESS TYPE IA |
| Countersink Angle | 90.0 DEGREES MINIMUM AND 92.0 DEGREES MAXIMUM |
| Material | STEEL FASTENER |
| Material | STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1010 PRIMARY WASHER |
| Washer Quantity | 1 |
| Head Diameter | 6.82 MILLIMETERS MINIMUM AND 7.35 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 |
|---|---|
| 11502770 | General Motors Llc Dba General Motors Llc (USA) |
| Reference | Meaning |
|---|---|
| 11502770 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
| 11501153 | 3/9 Design control — primary reference General Motors Corp |
| 11501153 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
NSN 5305-01-159-2780 is a Screw,assembled Washer, manufactured by General Motors Llc Dba General Motors Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-159-2780 has 1 manufacturer part number on file: 11502770 (General Motors Llc Dba General Motors Llc).
Key specifications for 11502770: Nonmachine Nominal Thread Diameter: 4.2 MILLIMETERS MM; Fastener Length: 38.70 MILLIMETERS MINIMUM AND 41.30 MILLIMETERS MAXIMUM MM; Surface Treatment Document and Classification: GM 4435-M CODE A FSCM 11862 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Thread Pitch in Millimeters: 1.41. 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.