The Screw,machine, cataloged under National Stock Number 5305-01-600-3728, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 13 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-600-3728 |
| Primary Part Number | 3M1277E5D17A |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Screw Surface Treatment | PASSIVATE |
| Shank Surface Treatment | PASSIVATE |
| Head Surface Treatment | PASSIVATE |
| Head Style | FLAT TOP ELEVATOR |
| Thread Direction | RIGHT-HAND |
| Screw Material | NICKEL ALLOY K-500 |
| Internal Drive Style | TORX |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| 3M1277E5D17A | Howmet Global Fastening Systems Inc (USA) |
| 3M1277E5D17A | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 3M1277E5D17A | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M1277E5D17A | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| 3M1277E5D17A | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 3M1277E5D17A | West Coast Aerospace, Inc. (USA) |
| 3M1277E5D17A | Houston Precision Fasteners I Lp (USA) |
| 3M1277E5D17A PRIMARY | The Boeing Company Div Defense (USA) |
| 3M1277E5D17A | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 3M1277E5D17A | Hi-Shear Corporation (USA) |
| 3M1277E5D17A | Huck International, Inc (USA) |
| 3M1277E5D17A | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 3M1277E5D17A | Saturn Fasteners Inc (USA) |
| Reference | Meaning |
|---|---|
| 3M1277E5D17A | 5/2 Secondary reference U.S. Government activity |
| 3M1277E5D17A | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-600-3728 is a Screw,machine, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-600-3728 has 13 manufacturer part numbers on file: 3M1277E5D17A (Howmet Global Fastening Systems Inc), 3M1277E5D17A (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), 3M1277E5D17A (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 3M1277E5D17A (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), 3M1277E5D17A (Sps Technologies, Llc Dba PB Fasteners) and 8 more.
Key specifications for 3M1277E5D17A: Screw Surface Treatment: PASSIVATE; Shank Surface Treatment: PASSIVATE; Head Surface Treatment: PASSIVATE; Head Style: FLAT TOP ELEVATOR. 10 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.