The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-291-0156, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Allison Transmission Inc Dba Allison Transmission, Inc. Government technical data includes 15 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-291-0156 |
| Primary Part Number | 11500899 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| Head Height | 7.24 MILLIMETERS MINIMUM AND 7.76 MILLIMETERS MAXIMUM MM |
| External Thread Tolerance Class | 6G G |
| Fastener Length | 100.0 MILLIMETERS NOMINAL MM |
| Thread Pitch in Millimeters | 1.75 |
| Thread Length | 36.0 MILLIMETERS NOMINAL MM |
| Hardness Rating | 33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | G-500-M CAGEC 73342 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 12.0 MILLIMETERS MM |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 17.67 MILLIMETERS MINIMUM AND 18.00 MILLIMETERS MAXIMUM MM |
| Minimum Tensile Strength | 1040 MEGAPASCALS |
| Material | STEEL PROPERTY CLASS 10.9 OVERALL |
| Thread Series Designator | M |
| 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 |
|---|---|
| 11500899 PRIMARY | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| Reference | Meaning |
|---|---|
| 11500899 | 5/9 Secondary reference General Motors Corp |
| 11500899 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
| B-2.101M | 3/9 Design control — primary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
| B-2.126M | D/9 Drawing number reference only General Motors Corp |
NSN 5305-01-291-0156 is a Screw,cap,hexagon Head, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-291-0156 has 1 manufacturer part number on file: 11500899 (Allison Transmission Inc Dba Allison Transmission, Inc).
Key specifications for 11500899: Head Height: 7.24 MILLIMETERS MINIMUM AND 7.76 MILLIMETERS MAXIMUM MM; External Thread Tolerance Class: 6G G; Fastener Length: 100.0 MILLIMETERS NOMINAL MM; Thread Pitch in Millimeters: 1.75. 15 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.