The Screw,close Tolerance, cataloged under National Stock Number 5305-01-481-9375, 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 20 specifications, cited from the U.S. Government catalog. The record lists 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-481-9375 |
| Primary Part Number | 3M1170D4-7AF |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Point Diameter | 0.425 INCHES NOMINAL IN |
| Fastener Length | 0.863 INCHES NOMINAL IN |
| Thread Length | 0.425 INCHES NOMINAL IN |
| Criticality Code Justification | AGAV |
| Spline Major Diameter | 0.154 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Grip Length | 0.438 INCHES NOMINAL IN |
| Grip Diameter | 0.249 INCHES NOMINAL IN |
| Surface Treatment | ALUMINUM OVERALL |
| Minimum Tensile Strength | 4400 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | TORX |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.358 INCHES MINIMUM AND 0.365 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 | Y |
| Part Number | Manufacturer |
|---|---|
| 3M1170D4-7AF PRIMARY | The Boeing Company Div Defense (USA) |
| TX1027D4-7AF | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| TX1027D4-7AF | Sps Technologies, Llc Dba PB Fasteners (USA) |
| TX1027D4-7AF | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| TX1027D4-7AF | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| TX1027D4-7AF | Howmet Global Fastening Systems Inc (USA) |
| 11825D4-7AF | Reid Products Inc. Dba Reid Products Inc (USA) |
| HP1170D4-7F | Heartland Precision Fasteners Inc (USA) |
| TX1027D4-7AF | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| TX1027D4-7AF | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| TX1027D4-7AF | 5/2 Secondary reference U.S. Government activity |
| TX1027D4-7AF | 5/9 Secondary reference Sps Technologies Inc |
NSN 5305-01-481-9375 is a Screw,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-481-9375 has 10 manufacturer part numbers on file: 3M1170D4-7AF (The Boeing Company Div Defense), TX1027D4-7AF (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), TX1027D4-7AF (Sps Technologies, Llc Dba PB Fasteners), TX1027D4-7AF (Fairchild Fasteners Europe - Vsd Gmbh), TX1027D4-7AF (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 5 more.
Key specifications for 3M1170D4-7AF: Point Diameter: 0.425 INCHES NOMINAL IN; Fastener Length: 0.863 INCHES NOMINAL IN; Thread Length: 0.425 INCHES NOMINAL IN; Criticality Code Justification: AGAV. 20 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.