The Washer,concave, cataloged under National Stock Number 5310-00-283-4656, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies Llc Dba PB Fasteners Div PB Fasteners. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Washer,concave |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (CAGE 27624); Reid Products Inc. Dba Reid Products Inc (CAGE 59563); Sps Technologies, Llc Dba PB Fasteners (CAGE 56878) |
| Parameter | Value |
|---|---|
| NSN | 5310-00-283-4656 |
| Primary Part Number | TLN1035L3W |
| Item Name | Washer,concave |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| 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 |
|---|---|
| TLN1035L3W | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| TLN1035L3W | Reid Products Inc. Dba Reid Products Inc (USA) |
| TLN1035L3W | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| TLN1035L3W | 5/2 Secondary reference U.S. Government activity |
| TLN1035L3W | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| TLN1035L3W | 5/9 Secondary reference U.S. Government activity |
| TLN1035L3W | 3/9 Design control — primary reference U.S. Government activity |
NSN 5310-00-283-4656 is a Washer,concave, manufactured by Sps Technologies Llc Dba PB Fasteners Div PB Fasteners, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-283-4656 has 3 manufacturer part numbers on file: TLN1035L3W (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), TLN1035L3W (Reid Products Inc. Dba Reid Products Inc), TLN1035L3W (Sps Technologies, Llc Dba PB Fasteners).
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.