The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-172-5137, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Sps Technologies, Llc Dba PB Fasteners (CAGE 56878); Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (CAGE 16258); Howmet Global Fastening Systems Inc (CAGE 15653); Bristol Industries, Llc (CAGE 27238) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-172-5137 |
| Primary Part Number | HS262-820 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok |
| 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 |
|---|---|
| HS262-820 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HS262-820 PRIMARY | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| HS262-820 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| HS262-820 PRIMARY | Bristol Industries, Llc (USA) |
| Reference | Meaning |
|---|---|
| BH00510-8 | 5/9 Secondary reference Bristol Industries, Llc |
| 48FLW-820 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| HS262-820 | 7/2 Vendor item drawing reference The Boeing Company |
| HS262-820 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
| SLN149-820 | 5/9 Secondary reference Lerco Div Space-Lok Inc |
| H39921-8 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
NSN 5310-01-172-5137 is a Nut,self-Locking,extended Washer, manufactured by Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-172-5137 has 4 manufacturer part numbers on file: HS262-820 (Sps Technologies, Llc Dba PB Fasteners), HS262-820 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok), HS262-820 (Howmet Global Fastening Systems Inc), HS262-820 (Bristol Industries, Llc).
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.