The Bolt,close Tolerance, cataloged under National Stock Number 5306-00-193-0886, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-193-0886 |
| Primary Part Number | 3M33-4D15 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Head Height | 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN |
| Fastener Length | 1.390 INCHES MINIMUM AND 1.437 INCHES MAXIMUM IN |
| Thread Length | 0.442 INCHES MINIMUM AND 0.509 INCHES MAXIMUM IN |
| Hardness Rating | 24.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.928 INCHES MINIMUM AND 0.948 INCHES MAXIMUM IN |
| Width Between Flats | 0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.234 INCHES MINIMUM AND 1.266 INCHES MAXIMUM 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 |
|---|---|
| 3M33-4D15 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 3M33-4D15 | Huck International, Inc (USA) |
| 3M33-4D15 | Federal Manufacturing Corp (USA) |
| 3M33-4D15 | Howmet Global Fastening Systems Inc (USA) |
| 3M33-4D15 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 3M33-4D15 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 3M33-4D15 | 5/2 Secondary reference U.S. Government activity |
| 3M33-4D15 | 5/2 Secondary reference U.S. Government activity |
| 3M33-4D15 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-00-193-0886 is a Bolt,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-193-0886 has 6 manufacturer part numbers on file: 3M33-4D15 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), 3M33-4D15 (Huck International, Inc), 3M33-4D15 (Federal Manufacturing Corp), 3M33-4D15 (Howmet Global Fastening Systems Inc), 3M33-4D15 (Valley-Todeco, Inc. Dba Arconic Fastening Systems) and 1 more.
Key specifications for 3M33-4D15: Surface Finish: 32.0 MICROINCHES GRIP; Head Height: 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN; Fastener Length: 1.390 INCHES MINIMUM AND 1.437 INCHES MAXIMUM IN; Thread Length: 0.442 INCHES MINIMUM AND 0.509 INCHES MAXIMUM IN. 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.