The Screw,close Tolerance, cataloged under National Stock Number 5305-01-494-0615, 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 17 specifications, cited from the U.S. Government catalog. The record lists 21 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-494-0615 |
| Primary Part Number | TX1027C4D11A |
| 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 | 1.092 INCHES MINIMUM AND 1.122 INCHES MAXIMUM IN |
| Thread Length | 0.425 INCHES NOMINAL IN |
| Spline Major Diameter | 0.1540 INCHES MINIMUM AND 0.1560 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.672 INCHES MINIMUM AND 0.692 INCHES MAXIMUM IN |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 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 | 28 |
| Material | NICKEL ALLOY 718 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 | X |
| Part Number | Manufacturer |
|---|---|
| 3M1170C4D11A | Houston Precision Fasteners I Lp (USA) |
| TX1027C4D11A PRIMARY | Huck International, Inc (USA) |
| TX1027C4D11A | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 3M1170C4D11A | Heartland Precision Fasteners Inc (USA) |
| 3M1170C4D11A PRIMARY | The Boeing Company Div Defense (USA) |
| 3M1170C4D11A PRIMARY | Saturn Fasteners Inc (USA) |
| TX1027C4D11A | Howmet Global Fastening Systems Inc (USA) |
| 3M1170C4D11A | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| 3M1170C4D11A | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| TX1027C4D11A | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| TX1027C4D11A | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| GS1014C4D11A PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| 11845C4D11A PRIMARY | Reid Products Inc. Dba Reid Products Inc (USA) |
| WC1170C4D11A | West Coast Aerospace, Inc. (USA) |
| 11825C4-11A | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M1170C4D11A | West Coast Aerospace, Inc. (USA) |
| TX1027C4D11A | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| TX1027C4D11A | Hi-Shear Corporation (USA) |
| 3M1170C4D11A | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| TX1027C4D11A | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| TX1027C4D11A | 3/2 Design control — primary reference U.S. Government activity |
| TX1027C4D11A | 5/2 Secondary reference U.S. Government activity |
| 3M1170C4D11A | 5/2 Secondary reference U.S. Government activity |
| TX1027C4D11A | 5/9 Secondary reference Sps Technologies Inc |
NSN 5305-01-494-0615 is a Screw,close Tolerance, manufactured by Huck International, Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-494-0615 has 21 manufacturer part numbers on file: 3M1170C4D11A (Houston Precision Fasteners I Lp), TX1027C4D11A (Huck International, Inc), TX1027C4D11A (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 3M1170C4D11A (Heartland Precision Fasteners Inc), 3M1170C4D11A (The Boeing Company Div Defense) and 16 more.
Key specifications for TX1027C4D11A: Spline Minor Diameter: 0.1105 INCHES MINIMUM AND 0.1125 INCHES MAXIMUM IN; Fastener Length: 1.092 INCHES MINIMUM AND 1.122 INCHES MAXIMUM IN; Thread Length: 0.425 INCHES NOMINAL IN; Spline Major Diameter: 0.1540 INCHES MINIMUM AND 0.1560 INCHES MAXIMUM IN. 17 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.