The Washer,lock, cataloged under National Stock Number 5310-01-526-5012, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Co. The record lists 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-526-5012 |
| Primary Part Number | 91007A636 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| 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 |
|---|---|
| 0210119 FIND 20 | Niwc Pacific San Diego Navy Erp Dba Naval Information Warfare Center Pacific Div Naval Information Warfare Center Pacific (USA) |
| 31NLOC8P | Niwc Pacific San Diego Navy Erp Dba Naval Information Warfare Center Pacific Div Naval Information Warfare Center Pacific (USA) |
| 91007A636 PRIMARY | Mcmaster-Carr Supply Co (USA) |
| 31NLOC8P | Mell Pell Supply Inc (USA) |
| Reference | Meaning |
|---|---|
| 36-0408 | 5/1 Secondary reference H.o. Bostrom Company, Inc. Dba Ho Bostrom Co Inc |
NSN 5310-01-526-5012 is a Washer,lock, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-526-5012 has 4 manufacturer part numbers on file: 0210119 FIND 20 (Niwc Pacific San Diego Navy Erp Dba Naval Information Warfare Center Pacific Div Naval Information Warfare Center Pacific), 31NLOC8P (Niwc Pacific San Diego Navy Erp Dba Naval Information Warfare Center Pacific Div Naval Information Warfare Center Pacific), 91007A636 (Mcmaster-Carr Supply Co), 31NLOC8P (Mell Pell Supply Inc).
Key specifications for 91007A636: Special Features: NOMINAL DIAMETER IS .3125 GRADE 8 LOCK WASHER, STANDARD.. 0 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.