The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-00-637-8688, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5306-00-637-8688 |
| Primary Part Number | 261012 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — No Item Name Available |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | CANCELLED |
| Head Height | 0.320 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Extended Washer Diameter | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS 2416 ASSN STD ALL TREATMENT RESPONSES OVERALL |
| Material Document and Classification | AMS 6304 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Externally Relieved Body Diameter Quantity | 1 |
| Surface Treatment | NICKEL AND CADMIUM OVERALL |
| Hardness Rating | 30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| Hole Configuration Style | HEXAGON LONGITUDINAL HOLE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Material | STEEL COMP 601 OVERALL |
| Nonstandard Thread Pitch Diameter | +0.2216 TO 0.2238 INCHES IN |
| Hole Quantity | 4 |
| Fastener Length | 1.678 INCHES MINIMUM AND 1.698 INCHES MAXIMUM IN |
| Hole Diameter | 0.062 INCHES NOMINAL IN |
| Thread Length | 0.730 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN |
| Hole Type | DRILLED |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| First Diameter From Head | 0.218 INCHES MINIMUM AND 0.228 INCHES MAXIMUM IN |
| Thread Quantity Per Inch | 28 |
| Width Between Flats | 0.304 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.928 INCHES MINIMUM AND 0.948 INCHES MAXIMUM IN |
| Extended Washer Thickness | 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 261012 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
NSN 5306-00-637-8688 is a Bolt,externally Relieved Body, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5306 (No Item Name Available). Status: cancelled.
NSN 5306-00-637-8688 has 1 cross-referenced part number: 261012 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
There are 2 known substitutes for 5306-00-637-8688: 5306-00-638-3799, 5210-00-600-5757. Verify interchangeability with system specifications before substitution.
Key specifications for 261012: Head Height: 0.320 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN; Thread Direction: RIGHT-HAND; Extended Washer Diameter: 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AMS 2416 ASSN STD ALL TREATMENT RESPONSES OVERALL. 24 total characteristics are documented in the Federal Logistics Information System.
NSN 5306-00-637-8688 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.