The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-00-983-1209, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Gichner Systems Group, Inc. Div C5isr Division. Government technical data includes 19 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-983-1209 |
| Primary Part Number | 4000260-1 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Gichner Systems Group, Inc. Div C5isr Division |
| Status | ACTIVE |
| Head Height | 0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN |
| Fastener Length | 1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN |
| Thread Length | 0.750 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN |
| Hardness Rating | 140.0 BRINELL STANDARD MINIMUM OVERALL |
| Material Document and Classification | 66 300 SERIES FED STD SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.294 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.551 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.313 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 80000 POUNDS PER SQUARE INCH LBS |
| Minimum Yield Strength | 30000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 4000260-1 PRIMARY | Gichner Systems Group, Inc. Div C5isr Division (USA) |
NSN 5306-00-983-1209 is a Bolt,externally Relieved Body, manufactured by Gichner Systems Group, Inc. Div C5isr Division, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-983-1209 has 1 manufacturer part number on file: 4000260-1 (Gichner Systems Group, Inc. Div C5isr Division).
Key specifications for 4000260-1: Head Height: 0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN; Fastener Length: 1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN; Thread Length: 0.750 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN; Hardness Rating: 140.0 BRINELL STANDARD MINIMUM OVERALL. 19 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.