The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-020-6899, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Support Services Corp. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-020-6899 |
| Primary Part Number | 605B739H01 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Northrop Grumman Support Services Corp |
| Status | ACTIVE |
| Extended Washer Thickness | 0.060 INCHES NOMINAL IN |
| Head Height | 0.386 INCHES NOMINAL IN |
| Fastener Length | 4.614 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416, TYPE 2, CLASS 2 FED SPEC ALL TREATMENT RESPONSES OR 133C133, PARTF, CAGE 97942 MFR REF ALL TREATMENT RESPONSES OVERALL |
| Extended Washer Diameter | 0.620 INCHES NOMINAL IN |
| Thread Length | 1.000 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-763, COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.400 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.563 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 3.614 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 13 |
| Material | STEEL COMP 303 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 |
|---|---|
| 605B739H01 PRIMARY | Northrop Grumman Support Services Corp (USA) |
| Reference | Meaning |
|---|---|
| 605B739H01 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5306-01-020-6899 is a Bolt,externally Relieved Body, manufactured by Northrop Grumman Support Services Corp, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-020-6899 has 1 manufacturer part number on file: 605B739H01 (Northrop Grumman Support Services Corp).
Key specifications for 605B739H01: Extended Washer Thickness: 0.060 INCHES NOMINAL IN; Head Height: 0.386 INCHES NOMINAL IN; Fastener Length: 4.614 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416, TYPE 2, CLASS 2 FED SPEC ALL TREATMENT RESPONSES OR 133C133, PARTF, CAGE 97942 MFR REF ALL TREATMENT RESPONSES 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.