The Screw,shoulder, cataloged under National Stock Number 5305-01-536-4450, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. The record lists 18 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 — Screws (FSG 53) |
| Manufacturers | The Boeing Company Div Defense (CAGE 76301); Linread Ltd (CAGE U6683); Fastener Innovation Technology, Inc. Dba F I T (CAGE 58998); West Coast Aerospace, Inc. (CAGE 60516); Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (CAGE 27624) |
| Parameter | Value |
|---|---|
| NSN | 5305-01-536-4450 |
| Primary Part Number | 3M1278E3D6A |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 3M1278E3D6A PRIMARY | The Boeing Company Div Defense (USA) |
| TX1027E3D6YA | Linread Ltd (GBR) |
| 3M1278E3D6A | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| WC1278E3D6A | West Coast Aerospace, Inc. (USA) |
| TX1027E3D6YA | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 3M1278E3D6A | Camcar Llc Div Camcar Llc (USA) |
| TX1027E3D6YA | Huck International, Inc (USA) |
| 3M1278E3D6A | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| TX1027E3D6YA | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 3M1278E3D6A | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| TX1027E3D6YA | Howmet Global Fastening Systems Inc (USA) |
| TX1027E3D6YA | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M1278E3D6A | Houston Precision Fasteners I Lp (USA) |
| 3M1278E3D6A | Heartland Precision Fasteners Inc (USA) |
| TX1027E3D6YA | Hi-Shear Corporation (USA) |
| TX1027E3D6YA | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 11863E3D6A | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M1278E3D6A | Saturn Fasteners Inc (USA) |
| Reference | Meaning |
|---|---|
| TX1027E3D6YA | 5/9 Secondary reference Sps Technologies Inc |
| TX1027E3D6YA | 5/2 Secondary reference U.S. Government activity |
| TX1027E3D6YA | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-536-4450 is a Screw,shoulder, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-536-4450 has 18 manufacturer part numbers on file: 3M1278E3D6A (The Boeing Company Div Defense), TX1027E3D6YA (Linread Ltd), 3M1278E3D6A (Fastener Innovation Technology, Inc. Dba F I T), WC1278E3D6A (West Coast Aerospace, Inc.), TX1027E3D6YA (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners) and 13 more.
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.