The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-00-031-6357, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Textron Fastening Systems Dba Decorah Operations Tfs. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-031-6357 |
| Primary Part Number | 212204 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — No Item Name Available |
| Manufacturer | Textron Fastening Systems Dba Decorah Operations Tfs |
| Status | ACTIVE |
| Second Diameter From Head | 0.210 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Hardness Rating | 30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| First Diameter From Head | 0.372 INCHES MINIMUM AND 0.373 INCHES MAXIMUM IN |
| Third Diameter From Head | 0.372 INCHES MINIMUM AND 0.373 INCHES MAXIMUM IN |
| Thread Series Designator | UNF |
| Material Document and Classification | AMS 5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.590 INCHES MINIMUM AND 1.610 INCHES MAXIMUM FIRST HOLE IN |
| Externally Relieved Body Diameter Quantity | 3 |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Class | 1A A |
| Fastener Length | 1.700 INCHES MINIMUM AND 1.720 INCHES MAXIMUM IN |
| Head Style | HEXAGON |
| Head Height | 0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN |
| Thread Quantity Per Inch | 28 |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 1.060 INCHES MINIMUM AND 1.100 INCHES MAXIMUM IN |
| Thread Length | 0.350 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.065 INCHES MINIMUM AND 0.075 INCHES MAXIMUM FIRST HOLE IN |
| Distance From Largest Bearing Surface of Head to End of Third Diameter | 1.190 INCHES MINIMUM AND 1.210 INCHES MAXIMUM IN |
| Width Between Flats | 0.555 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| Successor | 6515-01-589-5156 (212.204) |
| HAZMAT | No |
NSN 5306-00-031-6357 is a Bolt,externally Relieved Body, manufactured by Textron Fastening Systems Dba Decorah Operations Tfs, classified under FSC 5306 (No Item Name Available). Status: active.
NSN 5306-00-031-6357 has 3 cross-referenced part numbers: 212204 (Royal Oak Gage, Inc), 212204 (Textron Fastening Systems Dba Decorah Operations Tfs), 212204 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
There is 1 known substitute for 5306-00-031-6357: 6515-01-589-5156. Verify interchangeability with system specifications before substitution.
Key specifications for 212204: Second Diameter From Head: 0.210 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN; Thread Direction: RIGHT-HAND; Hardness Rating: 30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL; First Diameter From Head: 0.372 INCHES MINIMUM AND 0.373 INCHES MAXIMUM IN. 22 total characteristics are documented in the Federal Logistics Information System.