The Screw,close Tolerance, cataloged under National Stock Number 5305-01-481-9323, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies Llc Dba PB Fasteners Div PB Fasteners. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 16 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 5305-01-481-9323 |
| Primary Part Number | TX1026C4-9AF |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| Status | ACTIVE |
| Fastener Length | 0.988 INCHES NOMINAL IN |
| Thread Length | 0.425 INCHES NOMINAL IN |
| Criticality Code Justification | AGAV |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.563 INCHES NOMINAL IN |
| Grip Diameter | 0.249 INCHES NOMINAL IN |
| 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 | NICKEL ALLOY 718 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.470 INCHES MINIMUM AND 0.477 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| TX1026C4-9AF | Huck International, Inc (USA) |
| TX1026C4-9AF PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| GS1006C4-9AF | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| 3M1169C4-9AF | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| TX1026C4-9AF PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M1169C4-9AF | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 3M1169C4-9AF | Heartland Precision Fasteners Inc (USA) |
| WC1169C4-9AF | West Coast Aerospace, Inc. (USA) |
| TX1026C4-9AF PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 3M1169C4-9AF | Houston Precision Fasteners I Lp (USA) |
| 11827C4-9AF | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M1169C4-9AF | Saturn Fasteners Inc (USA) |
| TX1026C4-9AF PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| TX1026C4-9AF PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| TX1026C4-9AF PRIMARY | Hi-Shear Corporation (USA) |
| TX1026C4-9AF | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| Reference | Meaning |
|---|---|
| TX1026C4-9AF | 5/2 Secondary reference U.S. Government activity |
| 3M1169C4-9AF | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| TX1026C4-9AF | 5/9 Secondary reference Sps Technologies Inc |
NSN 5305-01-481-9323 is a Screw,close Tolerance, manufactured by Sps Technologies Llc Dba PB Fasteners Div PB Fasteners, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-481-9323 has 16 manufacturer part numbers on file: TX1026C4-9AF (Huck International, Inc), TX1026C4-9AF (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), GS1006C4-9AF (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), 3M1169C4-9AF (Fastener Innovation Technology, Inc. Dba F I T), TX1026C4-9AF (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company) and 11 more.
Key specifications for TX1026C4-9AF: Fastener Length: 0.988 INCHES NOMINAL IN; Thread Length: 0.425 INCHES NOMINAL IN; Criticality Code Justification: AGAV; Nominal Thread Diameter: 0.250 INCHES IN. 15 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.
NSN 5305-01-481-9323 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.