The Screw,close Tolerance, cataloged under National Stock Number 5305-01-336-5312, 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 19 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-336-5312 |
| Primary Part Number | HR240-6-13A |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES OVERALL |
| Fastener Length | 1.375 INCHES MINIMUM AND 1.405 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | NAS 4006 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.553 INCHES MINIMUM AND 0.603 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM IN |
| Grip Diameter | 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | OFFSET CRUCIFORM (TORQUE SET) |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | TITANIUM ALLOY UNS R56400 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.704 INCHES MINIMUM AND 0.762 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 |
|---|---|
| HR240-6-13A | Hi-Shear Corporation (USA) |
| 03A174-6-13A | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
| HR240-6-13A | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| AIC1652-6-13A | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| SC3102-6-13A | Howmet Global Fastening Systems Inc (USA) |
| PBF1417-6-13A | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| SLB146-6-13A | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| Reference | Meaning |
|---|---|
| T009-6-13A | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| 03A174-6-13A | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| 03A174-6-13A | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
| 123743-6-13A | 5/2 Secondary reference U.S. Government activity |
| SC3102-6-13A | 5/9 Secondary reference Sps Technologies Inc |
| T009-6-13A | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-336-5312 is a Screw,close Tolerance, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-336-5312 has 7 manufacturer part numbers on file: HR240-6-13A (Hi-Shear Corporation), 03A174-6-13A (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems), HR240-6-13A (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), AIC1652-6-13A (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), SC3102-6-13A (Howmet Global Fastening Systems Inc) and 2 more.
Key specifications for HR240-6-13A: Surface Finish: 32.0 MICROINCHES OVERALL; Fastener Length: 1.375 INCHES MINIMUM AND 1.405 INCHES MAXIMUM IN; Surface Treatment Document and Classification: NAS 4006 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.553 INCHES MINIMUM AND 0.603 INCHES MAXIMUM IN. 19 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.