The Screw,close Tolerance, cataloged under National Stock Number 5305-01-196-2742, 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 Div PB Fasteners. Government technical data includes 24 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-196-2742 |
| Primary Part Number | GB510CG3-18 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Fastener Length | 1.497 INCHES MINIMUM AND 1.517 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.356 INCHES MINIMUM AND 0.392 INCHES MAXIMUM IN |
| Hardness Rating | 43.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.125 INCHES MINIMUM AND 1.141 INCHES MAXIMUM IN |
| Grip Diameter | 0.1889 INCHES MINIMUM AND 0.1894 INCHES MAXIMUM IN |
| Locking Feature | DETENT BALL THREADS |
| 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 | 32 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.408 INCHES MINIMUM AND 1.428 INCHES MAXIMUM FIRST HOLE IN |
| Head Diameter | 0.328 INCHES MINIMUM AND 0.385 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 |
|---|---|
| GB510CG3-18 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| GB510CG3-18 | Hi-Shear Corporation (USA) |
| GB510CG3-18 | Howmet Global Fastening Systems Inc (USA) |
| GB510CG3-18 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| Reference | Meaning |
|---|---|
| AS292-3-18 | 3/2 Design control — primary reference U.S. Government activity |
| GB510CG3-18 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
| GB510CG3-18 | 5/2 Secondary reference U.S. Government activity |
| GB510CG3-18 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
NSN 5305-01-196-2742 is a Screw,close Tolerance, manufactured by Sps Technologies Llc Dba PB Fasteners Div PB Fasteners, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-196-2742 has 4 manufacturer part numbers on file: GB510CG3-18 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), GB510CG3-18 (Hi-Shear Corporation), GB510CG3-18 (Howmet Global Fastening Systems Inc), GB510CG3-18 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc).
Key specifications for GB510CG3-18: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Fastener Length: 1.497 INCHES MINIMUM AND 1.517 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 24 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.