The Washer,lock, cataloged under National Stock Number 5310-01-437-3257, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rexnord Industries Llc Div Stearns. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-437-3257 |
| Primary Part Number | 9-45-133200 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rexnord Industries Llc Div Stearns |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-Z-325, TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Outside Diameter | 0.553 INCHES MAXIMUM IN |
| Material Thickness | 0.125 INCHES MINIMUM IN |
| Surface Treatment | ZINC AND CHROMATE OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 0.380 INCHES MINIMUM AND 0.390 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 |
|---|---|
| 9-45-133200 PRIMARY | Rexnord Industries Llc Div Stearns (USA) |
| Reference | Meaning |
|---|---|
| 9-45-1332 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5310-01-437-3257 is a Washer,lock, manufactured by Rexnord Industries Llc Div Stearns, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-437-3257 has 1 manufacturer part number on file: 9-45-133200 (Rexnord Industries Llc Div Stearns).
Key specifications for 9-45-133200: Surface Treatment Document and Classification: QQ-Z-325, TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 0.553 INCHES MAXIMUM IN; Material Thickness: 0.125 INCHES MINIMUM IN. 7 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.