The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-513-0028, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-513-0028 |
| Primary Part Number | BACB30UU6K23 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Head Height | 0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN |
| Fastener Length | 1.893 INCHES MINIMUM AND 1.923 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | S10-85,TYPE 1 FED SPEC 10TH TREATMENT RESPONSE OVERALL |
| Thread Length | 0.470 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5962 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | DOUBLE HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.428 INCHES MINIMUM AND 1.448 INCHES MAXIMUM IN |
| Width Between Flats | 0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN |
| Grip Diameter | 0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | NICKEL ALLOY 718 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 |
|---|---|
| BACB30UU6K23 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30UU6K23 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30UU6K23 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BACB30UU6K23 | Federal Manufacturing Corp (USA) |
| BACB30UU6K23 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| BACB30UU6K23 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30UU6K23 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| BACB30UU6K23 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-513-0028 is a Bolt,close Tolerance, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-513-0028 has 7 manufacturer part numbers on file: BACB30UU6K23 (Sps Technologies, Llc Dba PB Fasteners), BACB30UU6K23 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), BACB30UU6K23 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), BACB30UU6K23 (Federal Manufacturing Corp), BACB30UU6K23 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries) and 2 more.
Key specifications for BACB30UU6K23: Head Height: 0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN; Fastener Length: 1.893 INCHES MINIMUM AND 1.923 INCHES MAXIMUM IN; Surface Treatment Document and Classification: S10-85,TYPE 1 FED SPEC 10TH TREATMENT RESPONSE OVERALL; Thread Length: 0.470 INCHES NOMINAL IN. 16 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.