The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-456-6505, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sequence Support Services Inc. Government technical data includes 18 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-456-6505 |
| Primary Part Number | S4928913-4D19 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sequence Support Services Inc |
| Status | ACTIVE |
| Head Height | 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN |
| Fastener Length | 1.489 INCHES MINIMUM AND 1.519 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-C-320, CLASS 2 TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE GRIP |
| Surface Treatment Document and Classification | QQ-P-416, TYPE 2 CLASS2 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
| Thread Length | 0.276 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR AMS 6322 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.178 INCHES MINIMUM AND 1.198 INCHES MAXIMUM IN |
| Width Between Flats | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Grip Diameter | 0.2483 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM IN |
| Surface Treatment | CHROMIUM GRIP |
| Surface Treatment | CADMIUM AND CHROMATE FASTENER |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP E4340 OR STEEL COMP 8740 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 |
|---|---|
| S4928913-4D19 | Sequence Support Services Inc (USA) |
| S4928913-4D19 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| S4928913-4D19 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| S4928913-4D19 | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| S4928913-4D19 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| S4928913-4D19 | Huck International, Inc (USA) |
| S4928913-4D19 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| S4928913-4D19 | 5/9 Secondary reference U.S. Government activity |
| S4928913-4D19 | 5/9 Secondary reference Mercury Aerospace Fasteners Inc |
| S4928913-4D19 | 3/2 Design control — primary reference U.S. Government activity |
| S4928913-4D19 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-456-6505 is a Bolt,close Tolerance, manufactured by Sequence Support Services Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-456-6505 has 7 manufacturer part numbers on file: S4928913-4D19 (Sequence Support Services Inc), S4928913-4D19 (Sps Technologies, Llc Dba PB Fasteners), S4928913-4D19 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), S4928913-4D19 (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), S4928913-4D19 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners) and 2 more.
Key specifications for S4928913-4D19: Head Height: 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN; Fastener Length: 1.489 INCHES MINIMUM AND 1.519 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-C-320, CLASS 2 TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE GRIP; Surface Treatment Document and Classification: QQ-P-416, TYPE 2 CLASS2 FED SPEC SINGLE TREATMENT RESPONSE FASTENER. 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.