The Screw,machine, cataloged under National Stock Number 5305-01-600-3701, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-600-3701 |
| Primary Part Number | 3M1277E4D18A |
| 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 |
|---|---|
| 3M1277E4D18A | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| 3M1277E4D18A | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| TX1027E4D18XA | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| TX1027E4D18XA | Lorine Mfg Co (USA) |
| TX1027E4D18XA | Sps Technologies, Llc Dba PB Fasteners (USA) |
| TX1027E4D18XA | Hi-Shear Corporation (USA) |
| 3M1277E4D18A | Houston Precision Fasteners I Lp (USA) |
| 3M1277E4D18A PRIMARY | The Boeing Company Div Defense (USA) |
| TX1027E4D18XA | Huck International, Inc (USA) |
| 3M1277E4D18A | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| TX1027E4D18XA | The Sherwin-Williams Company (USA) |
| 3M1277E4D18A | Heartland Precision Fasteners Inc (USA) |
| TX1027E4D18XA | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| TX1027E4D18XA | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-600-3701 is a Screw,machine, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-600-3701 has 13 manufacturer part numbers on file: 3M1277E4D18A (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), 3M1277E4D18A (Fastener Innovation Technology, Inc. Dba F I T), TX1027E4D18XA (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), TX1027E4D18XA (Lorine Mfg Co), TX1027E4D18XA (Sps Technologies, Llc Dba PB Fasteners) and 8 more.
Key specifications for 3M1277E4D18A: 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.