The Pin,step Taper-Lock, cataloged under National Stock Number 5315-01-004-4257, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies Llc Dba PB Fasteners Div PB Fasteners. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Pin,step Taper-Lock |
| FSC / FSG | 5315 — Nails, Machine Keys, and Pins (FSG 53) |
| Manufacturers | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (CAGE 27624); Reid Products Inc. Dba Reid Products Inc (CAGE 59563) |
| Parameter | Value |
|---|---|
| NSN | 5315-01-004-4257 |
| Primary Part Number | TL841-8048-18 |
| Item Name | Pin,step Taper-Lock |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| 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 |
|---|---|
| TL841-8048-18 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| TL841-8048-18 | Reid Products Inc. Dba Reid Products Inc (USA) |
| Reference | Meaning |
|---|---|
| ST3M690A804818 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| TL841-8048-18 | 5/2 Secondary reference U.S. Government activity |
| TL841-8048-18 | 5/9 Secondary reference U.S. Government activity |
| TL841-8048-18 | 3/9 Design control — primary reference U.S. Government activity |
| TL841-8048-18 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
NSN 5315-01-004-4257 is a Pin,step Taper-Lock, manufactured by Sps Technologies Llc Dba PB Fasteners Div PB Fasteners, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-01-004-4257 has 2 manufacturer part numbers on file: TL841-8048-18 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), TL841-8048-18 (Reid Products Inc. Dba Reid Products Inc).
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.