The Screw,close Tolerance, cataloged under National Stock Number 5305-01-500-6403, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company. Government technical data includes 19 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-500-6403 |
| Primary Part Number | TX1026V3-21A |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| Status | ACTIVE |
| Spline Minor Diameter | 0.1570 INCHES MINIMUM AND 0.1600 INCHES MAXIMUM IN |
| Fastener Length | 2.4700 INCHES MINIMUM AND 2.5000 INCHES MAXIMUM IN |
| Thread Length | 0.735 INCHES NOMINAL IN |
| Criticality Code Justification | AGAV |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Spline Major Diameter | 0.2195 INCHES MINIMUM AND 0.2225 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.9275 INCHES MINIMUM AND 0.9475 INCHES MAXIMUM IN |
| Grip Diameter | 0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | TORX |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.6230 INCHES MINIMUM AND 0.6335 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 |
|---|---|
| TX1026V3-21A | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 3M1169V3-21A | The Boeing Company Div Defense (USA) |
| 11827V3-21A | Reid Products Inc. Dba Reid Products Inc (USA) |
| TX1026V3-21A | Hi-Shear Corporation (USA) |
| TX1026V3-21A | Howmet Global Fastening Systems Inc (USA) |
| TX1026V3-21A | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| TX1026V3-21A | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| TX1026V3-21A PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| TX1026V3-21A | Sps Technologies, Llc Dba PB Fasteners (USA) |
| GS1006V3-21A | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| Reference | Meaning |
|---|---|
| TX1026V3-21A | 5/2 Secondary reference U.S. Government activity |
| 10328245 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| TX1026V3-21A | 5/9 Secondary reference Sps Technologies Inc |
NSN 5305-01-500-6403 is a Screw,close Tolerance, manufactured by Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-500-6403 has 10 manufacturer part numbers on file: TX1026V3-21A (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), 3M1169V3-21A (The Boeing Company Div Defense), 11827V3-21A (Reid Products Inc. Dba Reid Products Inc), TX1026V3-21A (Hi-Shear Corporation), TX1026V3-21A (Howmet Global Fastening Systems Inc) and 5 more.
Key specifications for TX1026V3-21A: Spline Minor Diameter: 0.1570 INCHES MINIMUM AND 0.1600 INCHES MAXIMUM IN; Fastener Length: 2.4700 INCHES MINIMUM AND 2.5000 INCHES MAXIMUM IN; Thread Length: 0.735 INCHES NOMINAL IN; Criticality Code Justification: AGAV. 19 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.