The Screw,close Tolerance, cataloged under National Stock Number 5305-01-604-2872, 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 21 specifications, cited from the U.S. Government catalog. The record lists 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-604-2872 |
| Primary Part Number | 3M1277E4D14A |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Head Inside Diameter | 0.358 INCHES MINIMUM AND 0.365 INCHES MAXIMUM IN |
| Head Height | 0.057 INCHES NOMINAL IN |
| Fastener Length | 1.285 INCHES MINIMUM AND 1.315 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-L-87132 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.41 INCHES MINIMUM AND 0.44 INCHES MAXIMUM IN |
| Material Document and Classification | AMS5662 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Spline Major Diameter | 0.1100 INCHES MINIMUM AND 0.1120 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Features Provided | CETYL ALCOHOL LUBRICANT |
| Head Style | FLAT COUNTERSUNK UNDERCUT |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN |
| Grip Diameter | 0.2646 INCHES MINIMUM AND 0.2651 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | TORX |
| Countersink Angle | 99.00 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | NICKEL ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.3859 INCHES MINIMUM AND 0.3948 INCHES MAXIMUM IN |
| 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 |
|---|---|
| TX1027E4D14XA | Howmet Global Fastening Systems Inc (USA) |
| TX1027E4D14XA | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| TX1027E4D14XA | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M1277E4D14A PRIMARY | The Boeing Company Div Defense (USA) |
| TX1027E4D14XA | Hi-Shear Corporation (USA) |
| TX1027E4D14XA | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| TX1027E4D14XA | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-604-2872 is a Screw,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-604-2872 has 6 manufacturer part numbers on file: TX1027E4D14XA (Howmet Global Fastening Systems Inc), TX1027E4D14XA (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), TX1027E4D14XA (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 3M1277E4D14A (The Boeing Company Div Defense), TX1027E4D14XA (Hi-Shear Corporation) and 1 more.
Key specifications for 3M1277E4D14A: Head Inside Diameter: 0.358 INCHES MINIMUM AND 0.365 INCHES MAXIMUM IN; Head Height: 0.057 INCHES NOMINAL IN; Fastener Length: 1.285 INCHES MINIMUM AND 1.315 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-L-87132 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 21 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.