The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-659-5474, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-659-5474 |
| Primary Part Number | 12601961-001 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Extended Washer Thickness | 5.03 MILLIMETERS MINIMUM AND 5.40 MILLIMETERS MAXIMUM MM |
| Head Height | 11.73 MILLIMETERS MINIMUM AND 12.00 MILLIMETERS MAXIMUM MM |
| Fastener Length | 19.58 MILLIMETERS MINIMUM AND 20.42 MILLIMETERS MAXIMUM MM |
| Surface Treatment Document and Classification | F-100,PL20,TYPE V ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 17.67 MILLIMETERS MINIMUM AND 18.27 MILLIMETERS MAXIMUM MM |
| Thread Pitch in Millimeters | 1.25 |
| Thread Length | 19.58 MILLIMETERS MINIMUM AND 20.42 MILLIMETERS MAXIMUM MM |
| Material Document and Classification | ISO898-1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 12.00 MILLIMETERS MM |
| Head Style | DOUBLE HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 11.73 MILLIMETERS MINIMUM AND 12.00 MILLIMETERS MAXIMUM MM |
| Material | STEEL PROPERTY CLASS 12.9 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 |
|---|---|
| 12601961-001 | Oshkosh Defense Llc (USA) |
| 12601961-001 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 12601961 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 5305-01-659-5474 is a Screw,cap,hexagon Head, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-659-5474 has 2 manufacturer part numbers on file: 12601961-001 (Oshkosh Defense Llc), 12601961-001 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12601961-001: Extended Washer Thickness: 5.03 MILLIMETERS MINIMUM AND 5.40 MILLIMETERS MAXIMUM MM; Head Height: 11.73 MILLIMETERS MINIMUM AND 12.00 MILLIMETERS MAXIMUM MM; Fastener Length: 19.58 MILLIMETERS MINIMUM AND 20.42 MILLIMETERS MAXIMUM MM; Surface Treatment Document and Classification: F-100,PL20,TYPE V ASSN STD SINGLE TREATMENT RESPONSE OVERALL. 14 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.