The Bolt,shoulder, cataloged under National Stock Number 5306-00-857-2491, is classified within Federal Supply Class 5306 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Parker-Hannifin Corporation Dba Control Systems Division. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-857-2491 |
| Primary Part Number | 1677 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — No Item Name Available |
| Manufacturer | Parker-Hannifin Corporation Dba Control Systems Division |
| Status | ACTIVE |
| Material Document and Classification | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Surface Treatment | CADMIUM AND CHROMIUM OVERALL |
| Thread Series Designator | UNF |
| Shoulder Diameter | 0.5565 INCHES MINIMUM AND 0.5575 INCHES MAXIMUM FIRST SHOULDER IN |
| Head Height | 0.125 INCHES NOMINAL IN |
| Minimum Tensile Strength | 180000 POUNDS PER SQUARE INCH LBS |
| Shank Unthreaded Hole Diameter | 0.076 INCHES NOMINAL FIRST HOLE IN |
| Thread Quantity Per Inch | 28 |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Thread Class | 3A A |
| Thread Length | 0.370 INCHES MINIMUM IN |
| Shoulder Length | 2.380 INCHES NOMINAL FIRST SHOULDER IN |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 2.630 INCHES NOMINAL FIRST HOLE IN |
| Material | STEEL COMP 4130 OVERALL |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Fastener Length | 2.750 INCHES NOMINAL IN |
| Width Between Flats | 0.875 INCHES NOMINAL IN |
| Head Style | HEXAGON |
| Acquisition Status | ACTIVE |
| Successor | 6515-01-612-2649 (N4825) |
| HAZMAT | No |
NSN 5306-00-857-2491 is a Bolt,shoulder, manufactured by Parker-Hannifin Corporation Dba Control Systems Division, classified under FSC 5306 (No Item Name Available). Status: active.
NSN 5306-00-857-2491 has 2 cross-referenced part numbers: 1677 (Sweetland Engineering Co), 1677 (Parker-Hannifin Corporation Dba Control Systems Division).
There are 12 known substitutes for 5306-00-857-2491: 6515-01-612-2649, 5330-00-056-8427, 3750-00-299-0441 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 1677: Material Document and Classification: MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Surface Treatment: CADMIUM AND CHROMIUM OVERALL; Thread Series Designator: UNF; Shoulder Diameter: 0.5565 INCHES MINIMUM AND 0.5575 INCHES MAXIMUM FIRST SHOULDER IN. 19 total characteristics are documented in the Federal Logistics Information System.