The Screw,close Tolerance, cataloged under National Stock Number 5305-00-505-3441, 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 18 specifications, cited from the U.S. Government catalog. The record lists 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-00-505-3441 |
| Primary Part Number | LS15237C3-2 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Fastener Length | 0.453 INCHES MINIMUM AND 0.483 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.318 INCHES MINIMUM AND 0.368 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Grip Diameter | 0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| 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 | 32 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.266 INCHES MINIMUM AND 0.303 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 |
|---|---|
| LS15237C3-2 PRIMARY | Hi-Shear Corporation (USA) |
| LS15237C3-2 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| LS15237C3-2 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| AN515C-416-1 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| LS15237C3-2 PRIMARY | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| LS15237C3-2 | 7/2 Vendor item drawing reference U.S. Government activity |
| LS15237C3-2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-00-505-3441 is a Screw,close Tolerance, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-505-3441 has 5 manufacturer part numbers on file: LS15237C3-2 (Hi-Shear Corporation), LS15237C3-2 (Sps Technologies, Llc Dba PB Fasteners), LS15237C3-2 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), AN515C-416-1 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), LS15237C3-2 (Huck International, Inc).
Key specifications for LS15237C3-2: Fastener Length: 0.453 INCHES MINIMUM AND 0.483 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.318 INCHES MINIMUM AND 0.368 INCHES MAXIMUM IN; Material Document and Classification: AMS 5732 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.