The Washer,lock, cataloged under National Stock Number 5310-01-317-6347, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Illinois Tool Works Inc. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-317-6347 |
| Primary Part Number | 1232040-00-0551 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Illinois Tool Works Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Hardness Rating | 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM |
| Style Designator | FLAT INTERNAL TEETH |
| Outside Diameter | 1.042 INCHES MINIMUM AND 1.082 INCHES MAXIMUM IN |
| Material Thickness | 0.020 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN |
| Surface Treatment | ZINC OVERALL |
| Material | STEEL COMP 1050 OVERALL |
| Hole Diameter | 0.755 INCHES MINIMUM AND 0.765 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 1232040-00-0551 PRIMARY | Illinois Tool Works Inc (USA) |
| Reference | Meaning |
|---|---|
| 1232040-00-0551 | 5/9 Secondary reference Itw Shakeproof Automotive Products |
| 1534752 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 5310-01-317-6347 is a Washer,lock, manufactured by Illinois Tool Works Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-317-6347 has 1 manufacturer part number on file: 1232040-00-0551 (Illinois Tool Works Inc).
Key specifications for 1232040-00-0551: Surface Treatment Document and Classification: ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM; Style Designator: FLAT INTERNAL TEETH; Outside Diameter: 1.042 INCHES MINIMUM AND 1.082 INCHES MAXIMUM IN. 8 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.