The Screw,close Tolerance, cataloged under National Stock Number 5305-01-495-9257, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 19 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-495-9257 |
| Primary Part Number | TX1027C3-3A |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Spline Minor Diameter | 0.1105 INCHES MINIMUM AND 0.1125 INCHES MAXIMUM IN |
| Fastener Length | 0.5175 INCHES MINIMUM AND 0.5475 INCHES MAXIMUM IN |
| Thread Length | 0.345 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Spline Major Diameter | 0.1540 INCHES MINIMUM AND 0.1560 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.1775 INCHES MINIMUM AND 0.1975 INCHES MAXIMUM IN |
| Grip Diameter | 0.1885 INCHES MINIMUM AND 0.1895 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 | 32 |
| Material | NICKEL ALLOY 718 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.265 INCHES MINIMUM AND 0.272 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 |
|---|---|
| TX1027C3-3A | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| TX1027C3-3A PRIMARY | Huck International, Inc (USA) |
| 3M1170C3-3A | Twist Tite Mfg, Inc Dba Twist Tite Manufacturing Inc (USA) |
| 11845C3-3A PRIMARY | Reid Products Inc. Dba Reid Products Inc (USA) |
| WC1170C3-3A | West Coast Aerospace, Inc. (USA) |
| 3M1170C3-3A PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 3M1170C3-3A | Houston Precision Fasteners I Lp (USA) |
| TX1027C3-3A PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| TX1027C3-3A | Sps Technologies, Llc Dba PB Fasteners (USA) |
| TX1027C3-3A | Hi-Shear Corporation (USA) |
| TX1027C3-3A | Howmet Global Fastening Systems Inc (USA) |
| TX1027C3-3A | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| TX1027C3-3A | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 3M1170C3-3A | The Boeing Company Div Defense (USA) |
| 3M1170C3-3A PRIMARY | Heartland Precision Fasteners Inc (USA) |
| GS1014C3-3A PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| 3M1170C3-3A PRIMARY | Saturn Fasteners Inc (USA) |
| 3M1170C3-3A PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 11825C3-3A | Reid Products Inc. Dba Reid Products Inc (USA) |
| Reference | Meaning |
|---|---|
| TX1027C3-3A | 5/9 Secondary reference Sps Technologies Inc |
| TX1027C3-3A | 3/2 Design control — primary reference U.S. Government activity |
| TX1027C3-3A | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-495-9257 is a Screw,close Tolerance, manufactured by Huck International, Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-495-9257 has 19 manufacturer part numbers on file: TX1027C3-3A (Fairchild Fasteners Europe - Vsd Gmbh), TX1027C3-3A (Huck International, Inc), 3M1170C3-3A (Twist Tite Mfg, Inc Dba Twist Tite Manufacturing Inc), 11845C3-3A (Reid Products Inc. Dba Reid Products Inc), WC1170C3-3A (West Coast Aerospace, Inc.) and 14 more.
Key specifications for TX1027C3-3A: Spline Minor Diameter: 0.1105 INCHES MINIMUM AND 0.1125 INCHES MAXIMUM IN; Fastener Length: 0.5175 INCHES MINIMUM AND 0.5475 INCHES MAXIMUM IN; Thread Length: 0.345 INCHES NOMINAL IN; Material Document and Classification: AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 18 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.