The Screw,close Tolerance, cataloged under National Stock Number 5305-01-193-7613, 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 23 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-193-7613 |
| Primary Part Number | GB510CG611 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Fastener Length | 1.227 INCHES MINIMUM AND 1.247 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.352 INCHES MINIMUM AND 0.403 INCHES MAXIMUM IN |
| Hardness Rating | 43.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.688 INCHES MINIMUM AND 0.704 INCHES MAXIMUM IN |
| Grip Diameter | 0.3737 INCHES MINIMUM AND 0.3742 INCHES MAXIMUM IN |
| Locking Feature | DETENT BALL GRIP |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 63000 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 | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.099 INCHES MINIMUM AND 1.119 INCHES MAXIMUM FIRST HOLE IN |
| 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 |
|---|---|
| GB510CG611 | Hi-Shear Corporation (USA) |
| GB510CG611 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| GB510CG611 | Howmet Global Fastening Systems Inc (USA) |
| GB510CG611 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| AS292-6-11 | 3/2 Design control — primary reference U.S. Government activity |
| GB510CG611 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| GB510CG611 | 5/9 Secondary reference Jenkins Metal Corp |
| GB510CG611 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
| GB510CG611 | 5/2 Secondary reference U.S. Government activity |
| GB510CG611 | 5/9 Secondary reference Varian Data Machines Customer Service |
NSN 5305-01-193-7613 is a Screw,close Tolerance, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-193-7613 has 4 manufacturer part numbers on file: GB510CG611 (Hi-Shear Corporation), GB510CG611 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), GB510CG611 (Howmet Global Fastening Systems Inc), GB510CG611 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company).
Key specifications for GB510CG611: Surface Finish: 32.0 MICROINCHES GRIP; Fastener Length: 1.227 INCHES MINIMUM AND 1.247 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.352 INCHES MINIMUM AND 0.403 INCHES MAXIMUM IN. 23 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.