The Screw,close Tolerance, cataloged under National Stock Number 5305-01-706-9361, 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 17 specifications, cited from the U.S. Government catalog. The record lists 14 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-706-9361 |
| Primary Part Number | NAS1790V4-9 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| Status | ACTIVE |
| Fastener Length | 0.9875 INCHES NOMINAL IN |
| Thread Length | 0.425 INCHES NOMINAL IN |
| Material Document and Classification | AMS4928 AEROSPACE MATERIAL SPEC STD SINGLE MATERIAL RESPONSE OR AMS4967 AEROSPACE MATERIAL SPEC STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS1790 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Grip Length | 0.5625 INCHES NOMINAL IN |
| Grip Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 160000 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 | TITANIUM ALLOY UNS R56400 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.464 INCHES MINIMUM AND 0.506 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 |
|---|---|
| NAS1790V4-9 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| NAS1790V4-9 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| NAS1790V4-9 | West Coast Aerospace, Inc. (USA) |
| NAS1790V4-9 | Howmet Global Fastening Systems Inc (USA) |
| NAS1790V4-9 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| NAS1790V4-9 | Federal Manufacturing Corp (USA) |
| NAS1790V4-9 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| NAS1790V4-9 | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| NAS1790V4-9 | Hi-Shear Corporation (USA) |
| NAS1790V4-9 | Huck International, Inc (USA) |
| NAS1790V4-9 | Heartland Precision Fasteners Inc (USA) |
| NAS1790V4-9 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| NAS1790V4-9 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| NAS1790V4-9 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| NAS1790V4-9 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5305-01-706-9361 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 5305-01-706-9361 has 14 manufacturer part numbers on file: NAS1790V4-9 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), NAS1790V4-9 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok), NAS1790V4-9 (West Coast Aerospace, Inc.), NAS1790V4-9 (Howmet Global Fastening Systems Inc), NAS1790V4-9 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company) and 9 more.
Key specifications for NAS1790V4-9: Fastener Length: 0.9875 INCHES NOMINAL IN; Thread Length: 0.425 INCHES NOMINAL IN; Material Document and Classification: AMS4928 AEROSPACE MATERIAL SPEC STD SINGLE MATERIAL RESPONSE OR AMS4967 AEROSPACE MATERIAL SPEC STD SINGLE MATERIAL RESPONSE OVERALL; Nominal Thread Diameter: 0.250 INCHES 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.