The Bolt,internal Wrenching, cataloged under National Stock Number 5306-00-321-1312, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Caprice Engineering Company, Inc.. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-321-1312 |
| Primary Part Number | 1290240-101 |
| Item Name | Bolt,internal Wrenching |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Caprice Engineering Company, Inc. |
| Status | ACTIVE |
| Width Across Flats | 0.188 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN |
| Head Height | 0.250 INCHES NOMINAL IN |
| Fastener Length | 0.500 INCHES NOMINAL IN |
| Thread Length | 0.300 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5629 CIND H1000 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.290 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 0.118 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Distance From Largest Bearing Surface of Head to End of Third Diameter | 0.198 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.340 INCHES MINIMUM AND 0.341 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.050 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 3 |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Test Data Document | 36659-LC+72-1076 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Thread Quantity Per Inch | 32 |
| Third Diameter From Head | 0.141 INCHES MINIMUM AND 0.146 INCHES MAXIMUM IN |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.440 INCHES NOMINAL 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 |
|---|---|
| 1290240-101 | Caprice Engineering Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 1290240-101 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-00-321-1312 is a Bolt,internal Wrenching, manufactured by Caprice Engineering Company, Inc., classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-321-1312 has 1 manufacturer part number on file: 1290240-101 (Caprice Engineering Company, Inc.).
Key specifications for 1290240-101: Width Across Flats: 0.188 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN; Head Height: 0.250 INCHES NOMINAL IN; Fastener Length: 0.500 INCHES NOMINAL IN; Thread Length: 0.300 INCHES MAXIMUM IN. 20 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.