The Washer,lock, cataloged under National Stock Number 5310-01-651-7492, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-651-7492 |
| Primary Part Number | 12601071-006 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Hardness Rating | 44.00 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM |
| Style Designator | SPLIT HELICAL-LEFT HAND |
| Outside Diameter | 21.1 MILLIMETERS MAXIMUM MM |
| Material Thickness | 2.5 MILLIMETERS NOMINAL MM |
| Material | STEEL OVERALL |
| Hole Diameter | 12.2 MILLIMETERS MINIMUM 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 |
|---|---|
| 12601071-006 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 3836241006 | 5/9 Secondary reference Oshkosh Defense Llc |
| 3836241 | D/9 Drawing number reference only Oshkosh Defense Llc |
NSN 5310-01-651-7492 is a Washer,lock, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-651-7492 has 1 manufacturer part number on file: 12601071-006 (U S Army Tank Automotive Command Amsta-Im-Mm).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-659-3123. Verify interchangeability with system specifications before substitution.
Key specifications for 12601071-006: Hardness Rating: 44.00 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM; Style Designator: SPLIT HELICAL-LEFT HAND; Outside Diameter: 21.1 MILLIMETERS MAXIMUM MM; Material Thickness: 2.5 MILLIMETERS NOMINAL MM. 6 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.