The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-00-939-9702, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 22 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-939-9702 |
| Primary Part Number | 492918 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Head Height | 0.110 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Fastener Length | 4.510 INCHES MINIMUM AND 4.530 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS 7470 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Concentric Hole Depth | 4.180 INCHES MINIMUM AND 4.220 INCHES MAXIMUM IN |
| Thread Length | 0.560 INCHES MINIMUM AND 0.580 INCHES MAXIMUM IN |
| Hardness Rating | 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | COUNTERBORE UNTHREADED |
| Material Document and Classification | AMS 5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Counterbore Depth | 1.070 INCHES MINIMUM AND 1.090 INCHES MAXIMUM IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Counterbore Diameter | 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN |
| Width Between Flats | 0.616 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN |
| Shoulder Diameter | 1.290 INCHES MINIMUM AND 1.310 INCHES MAXIMUM IN |
| Concentric Hole Diameter | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL OVERALL |
| Shoulder Length | 3.200 INCHES MINIMUM AND 3.240 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 492918 | Newell Window Furnishings Co (CAN) |
| 492918 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 492918 | Kito Mfg Co. Ltd (JPN) |
| Reference | Meaning |
|---|---|
| 492918 | 5/9 Secondary reference Kwik File Storage Systems Llc |
| 492918 | 5/9 Secondary reference Cooper Industries Inc Cooper Petroleum Equipment Div Sunnyvale Operation |
| 492918 | 5/2 Secondary reference U.S. Government activity |
| 492918 | 5/9 Secondary reference Jdmc Enterprises Dba High Speed Machine Products |
| 492918 | 5/9 Secondary reference Kito Mfg Co. Ltd |
NSN 5306-00-939-9702 is a Bolt,internally Relieved Body, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-939-9702 has 3 manufacturer part numbers on file: 492918 (Newell Window Furnishings Co), 492918 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 492918 (Kito Mfg Co. Ltd).
Key specifications for 492918: Head Height: 0.110 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN; Fastener Length: 4.510 INCHES MINIMUM AND 4.530 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AMS 7470 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Concentric Hole Depth: 4.180 INCHES MINIMUM AND 4.220 INCHES MAXIMUM IN. 22 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.