The Screw,close Tolerance, cataloged under National Stock Number 5305-00-040-9431, 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. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-040-9431 |
| Primary Part Number | 106830-4-23 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Fastener Length | 1.819 INCHES MINIMUM AND 1.866 INCHES MAXIMUM IN |
| Thread Length | 0.371 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 08524-B-19019 MANUFACTURERS STANDARD |
| Grip Length | 1.428 INCHES MINIMUM AND 1.448 INCHES MAXIMUM IN |
| Grip Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.497 INCHES MINIMUM AND 0.507 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 |
|---|---|
| HT295-4-23 | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| HT8140-4-23 | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| 106830-4-23 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 11905-4-23 | Reid Products Inc. Dba Reid Products Inc (USA) |
| Reference | Meaning |
|---|---|
| HT295-4-23 | 5/9 Secondary reference Hi-Shear Corporation |
| 106830-4-23 | 5/9 Secondary reference Sps Technologies Inc |
| BM19019-4-23 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| ST3M454-4-23 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT8140-4-23 | 5/9 Secondary reference U.S. Government activity |
| BM19019-4-23 | 5/9 Secondary reference U.S. Government activity |
| HT8140-4-23 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
NSN 5305-00-040-9431 is a Screw,close Tolerance, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-040-9431 has 4 manufacturer part numbers on file: HT295-4-23 (Fairchild Fasteners Europe - Vsd Gmbh), HT8140-4-23 (Fairchild Fasteners Europe - Vsd Gmbh), 106830-4-23 (Sps Technologies, Llc Dba PB Fasteners), 11905-4-23 (Reid Products Inc. Dba Reid Products Inc).
Key specifications for 106830-4-23: Fastener Length: 1.819 INCHES MINIMUM AND 1.866 INCHES MAXIMUM IN; Thread Length: 0.371 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.250 INCHES IN; Head Style: FLAT COUNTERSUNK. 16 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.