The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-706-9783, 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 24 specifications, cited from the U.S. Government catalog. The record lists 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-706-9783 |
| Primary Part Number | GS1031-7D56 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace |
| Status | ACTIVE |
| Head Height | 0.257 INCHES NOMINAL IN |
| Fastener Length | 4.099 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.599 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM OVERALL IN |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.4375 INCHES IN |
| Head Style | SPLINE DRIVE SHEAR HEAD |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Grip Length | 3.490 INCHES MINIMUM AND 3.510 INCHES MAXIMUM IN |
| Head Minor Diameter | 0.714 INCHES NOMINAL IN |
| Grip Diameter | 0.436 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN |
| Locking Feature | RETAINER FIRST HOLE |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP XM-13 OVERALL |
| Hole Quantity | 1 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 3.981 INCHES MINIMUM AND 3.991 INCHES MAXIMUM OVERALL IN |
| Hole Type | DRILLED |
| Hole Diameter | 0.106 INCHES MINIMUM AND 0.111 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 |
|---|---|
| GS1031-7D56 PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| ST3M747-7D56 PRIMARY | Houston Precision Fasteners I Lp (USA) |
| HP7747-7D56 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| ST3M747-7D56 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 122896-7D56 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M747-7D56 PRIMARY | The Boeing Company Div Defense (USA) |
| SLB254-7D56 PRIMARY | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| PBF1266-7D56 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| MB155-7D56 PRIMARY | Hi-Shear Corporation (USA) |
| AIC688-7D56 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| S397-7D56 PRIMARY | Huck International, Inc (USA) |
| VS3191-7D56 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| VCG0002-7D56 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| Reference | Meaning |
|---|---|
| ST3M747 | D/9 Drawing number reference only The Boeing Company Div Defense |
| 122896-7D56 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-706-9783 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 5306-01-706-9783 has 13 manufacturer part numbers on file: GS1031-7D56 (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), ST3M747-7D56 (Houston Precision Fasteners I Lp), HP7747-7D56 (Heartland Precision Fasteners Inc), ST3M747-7D56 (Fastener Innovation Technology, Inc. Dba F I T), 122896-7D56 (Sps Technologies, Llc Dba PB Fasteners) and 8 more.
Key specifications for GS1031-7D56: Head Height: 0.257 INCHES NOMINAL IN; Fastener Length: 4.099 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.599 INCHES MAXIMUM IN. 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.