The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-628-5568, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 24 specifications, cited from the U.S. Government catalog. The record lists 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-628-5568 |
| Primary Part Number | TX1026E6D5XA |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Head Height | 0.147 INCHES NOMINAL IN |
| Fastener Length | 0.879 INCHES MINIMUM AND 0.882 INCHES MAXIMUM IN |
| Thread Length | 0.578 INCHES NOMINAL IN |
| Shank Unthreaded Hole Diameter | 0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM LOCKING FEATURE IN |
| Criticality Code Justification | AGAV |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Features Provided | CETYL ALCOHOL LUBRICANT |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.3125 INCHES NOMINAL IN |
| Grip Diameter | 0.3896 INCHES MINIMUM AND 0.3901 INCHES MAXIMUM IN |
| Nonstandard Thread Pitch Diameter | +0.3450 TO 0.3479 INCHES IN |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | TORX |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | NICKEL ALLOY 718 OVERALL |
| Hole Quantity | 1 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 0.614 INCHES MINIMUM AND 0.621 INCHES MAXIMUM LOCKING FEATURE IN |
| Hole Type | DRILLED |
| Hole Diameter | 0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM IN |
| Head Diameter | 0.724 INCHES MINIMUM AND 0.731 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| TX1026E6D5XA PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| TX1026E6D5XA PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| TX1026E6D5XA PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| TX1026E6D5XA PRIMARY | Hi-Shear Corporation (USA) |
| TX1026E6D5XA PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 3M1275E6D5A | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| TX1026E6D5XA | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-628-5568 is a Bolt,close Tolerance, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-628-5568 has 5 manufacturer part numbers on file: TX1026E6D5XA (Howmet Global Fastening Systems Inc), TX1026E6D5XA (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), TX1026E6D5XA (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), TX1026E6D5XA (Hi-Shear Corporation), TX1026E6D5XA (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for TX1026E6D5XA: Head Height: 0.147 INCHES NOMINAL IN; Fastener Length: 0.879 INCHES MINIMUM AND 0.882 INCHES MAXIMUM IN; Thread Length: 0.578 INCHES NOMINAL IN; Shank Unthreaded Hole Diameter: 0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM LOCKING FEATURE IN. 24 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.