The Bolt,machine, cataloged under National Stock Number 5306-00-263-8957, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is L & L Boiler Maintenance Inc. Government technical data includes 17 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. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-263-8957 |
| Primary Part Number | 4274 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — No Item Name Available |
| Manufacturer | L & L Boiler Maintenance Inc |
| Status | ACTIVE |
| Head Style | SQUARE |
| Material | STEEL COMP 1117 OVERALL |
| Material Document and Classification | ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A576 ASSN STD SINGLE MATERIAL RESPONSE OR QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Width Between Flats | 0.375 INCHES NOMINAL IN |
| Hole Configuration Style | SQUARE LONGITUDINAL HOLE |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Thread Quantity Per Inch | 20 |
| Head Height | 0.438 INCHES NOMINAL IN |
| Hole Type | DRILLED |
| Thread Direction | RIGHT-HAND |
| Hole Diameter | 0.063 INCHES NOMINAL IN |
| Thread Class | 2A A |
| Fastener Length | 0.938 INCHES NOMINAL IN |
| Hole Quantity | 1 |
| Features Provided | UNFINISHED HEAD |
| Thread Length | 0.812 INCHES MINIMUM IN |
| Acquisition Status | ACTIVE |
| Successor | 6515-01-554-5522 (CH5883) |
| HAZMAT | No |
NSN 5306-00-263-8957 is a Bolt,machine, manufactured by L & L Boiler Maintenance Inc, classified under FSC 5306 (No Item Name Available). Status: active.
NSN 5306-00-263-8957 has 3 cross-referenced part numbers: 4274 (D & J Parts Inc), WPP324 (Siemens Water Technologies Corp. Div Wallace & Tiernan Products), 4274 (L & L Boiler Maintenance Inc).
There are 8 known substitutes for 5306-00-263-8957: 6515-01-554-5522, 5999-00-188-4140, 3120-00-352-3189 and 5 more. Verify interchangeability with system specifications before substitution.
Key specifications for 4274: Head Style: SQUARE; Material: STEEL COMP 1117 OVERALL; Material Document and Classification: ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A576 ASSN STD SINGLE MATERIAL RESPONSE OR QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC). 17 total characteristics are documented in the Federal Logistics Information System.