The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-625-9537, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Houston Precision Fasteners I Lp. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-625-9537 |
| Primary Part Number | HS5798A9-24 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Houston Precision Fasteners I Lp |
| Status | ACTIVE |
| Extended Washer Thickness | 0.123 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Head Height | 0.547 INCHES MINIMUM AND 0.567 INCHES MAXIMUM IN |
| Fastener Length | 2.334 INCHES MINIMUM AND 2.364 INCHES MAXIMUM IN |
| Extended Washer Diameter | 0.928 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN |
| Thread Length | 0.849 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.562 INCHES IN |
| Head Style | DOUBLE HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.490 INCHES MINIMUM AND 1.510 INCHES MAXIMUM IN |
| Width Between Flats | 0.703 INCHES MINIMUM IN |
| Grip Diameter | 0.5610 INCHES MINIMUM AND 0.5615 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | COBALT COMP MP-35-N OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| HS5798A9-24 | Houston Precision Fasteners I Lp (USA) |
| HS5798A9-24 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| HS5798A9-24 | 7/2 Vendor item drawing reference The Boeing Company |
| HS5798A9-24 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-625-9537 is a Bolt,close Tolerance, manufactured by Houston Precision Fasteners I Lp, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-625-9537 has 2 manufacturer part numbers on file: HS5798A9-24 (Houston Precision Fasteners I Lp), HS5798A9-24 (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for HS5798A9-24: Extended Washer Thickness: 0.123 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Head Height: 0.547 INCHES MINIMUM AND 0.567 INCHES MAXIMUM IN; Fastener Length: 2.334 INCHES MINIMUM AND 2.364 INCHES MAXIMUM IN; Extended Washer Diameter: 0.928 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN. 15 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.