The Screw,close Tolerance, cataloged under National Stock Number 5305-01-481-9414, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear Corporation. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-481-9414 |
| Primary Part Number | TX1027D5-18A |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Point Diameter | 0.469 INCHES NOMINAL IN |
| Fastener Length | 1.594 INCHES NOMINAL IN |
| Thread Length | 0.469 INCHES NOMINAL IN |
| Criticality Code Justification | AGAV |
| Spline Major Diameter | 0.154 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.313 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Grip Length | 1.125 INCHES NOMINAL IN |
| Grip Diameter | 0.312 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 5820 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 | 24 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.438 INCHES MINIMUM AND 0.445 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 |
|---|---|
| TX1027D5-18A PRIMARY | Hi-Shear Corporation (USA) |
| HP1170D5-18 | Heartland Precision Fasteners Inc (USA) |
| TX1027D5-18A | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| TX1027D5-18A | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| TX1027D5-18A | Howmet Global Fastening Systems Inc (USA) |
| TX1027D5-18A PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 11825D5-18A | Reid Products Inc. Dba Reid Products Inc (USA) |
| TX1027D5-18A | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 3M1170D5-18A PRIMARY | The Boeing Company Div Defense (USA) |
| TX1027D5-18A | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| TX1027D5-18A | 5/9 Secondary reference Sps Technologies Inc |
| TX1027D5-18A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-481-9414 is a Screw,close Tolerance, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-481-9414 has 10 manufacturer part numbers on file: TX1027D5-18A (Hi-Shear Corporation), HP1170D5-18 (Heartland Precision Fasteners Inc), TX1027D5-18A (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), TX1027D5-18A (Fairchild Fasteners Europe - Vsd Gmbh), TX1027D5-18A (Howmet Global Fastening Systems Inc) and 5 more.
Key specifications for TX1027D5-18A: Point Diameter: 0.469 INCHES NOMINAL IN; Fastener Length: 1.594 INCHES NOMINAL IN; Thread Length: 0.469 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.