The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-526-3929, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-526-3929 |
| Primary Part Number | GS1032-L5-15 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace |
| Status | ACTIVE |
| Extended Washer Thickness | 0.045 INCHES NOMINAL IN |
| Head Height | 0.312 INCHES NOMINAL IN |
| Fastener Length | 1.489 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | P.S. 18021 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.575 INCHES MINIMUM AND 0.585 INCHES MAXIMUM IN |
| Thread Length | 0.551 INCHES NOMINAL IN |
| Shank Unthreaded Hole Diameter | 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE IN |
| Nominal Thread Diameter | 0.313 INCHES IN |
| Head Style | SPLINE EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.938 INCHES NOMINAL IN |
| Head Minor Diameter | 0.360 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Grip Diameter | 0.311 INCHES NOMINAL IN |
| Surface Treatment | LUBRICANT OVERALL |
| 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 | 1.291 INCHES NOMINAL FIRST HOLE 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 |
|---|---|
| GS1032-L5-15 PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| HP7753L5-15 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| ST3M753L5-15 | Houston Precision Fasteners I Lp (USA) |
| PBF1267L5-15 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| SLB255-L5-15 PRIMARY | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| MB156L5-15 PRIMARY | Hi-Shear Corporation (USA) |
| VFK600L5-15 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| ST3M753L5-15 PRIMARY | The Boeing Company Div Defense (USA) |
| AIC763L5-15 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M753L5-15 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 122897L5-15 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 11829L5-15 | Reid Products Inc. Dba Reid Products Inc (USA) |
| VS3190L5-15 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| S343L5-15 PRIMARY | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| 122897L5-15 | 3/2 Design control — primary reference U.S. Government activity |
| 122897L5-15 | 5/9 Secondary reference Sps Technologies Inc |
NSN 5306-01-526-3929 is a Bolt,close Tolerance, manufactured by B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-526-3929 has 14 manufacturer part numbers on file: GS1032-L5-15 (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), HP7753L5-15 (Heartland Precision Fasteners Inc), ST3M753L5-15 (Houston Precision Fasteners I Lp), PBF1267L5-15 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), SLB255-L5-15 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok) and 9 more.
Key specifications for GS1032-L5-15: Extended Washer Thickness: 0.045 INCHES NOMINAL IN; Head Height: 0.312 INCHES NOMINAL IN; Fastener Length: 1.489 INCHES NOMINAL IN; Surface Treatment Document and Classification: P.S. 18021 MFR REF SINGLE TREATMENT 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.