The Stud,plain, cataloged under National Stock Number 5307-00-155-1558, is classified within Federal Supply Class 5307 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Textron Lycoming Inc Williamsport Plant. Government technical data includes 17 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 | 5307-00-155-1558 |
| Primary Part Number | 25-29 |
| Item Name | Stud,plain |
| FSC / FSG | 5307 / 53 — No Item Name Available |
| Manufacturer | Textron Lycoming Inc Williamsport Plant |
| Status | ACTIVE |
| Thread Pitch Diameters | +0.2208 TO 0.2221 INCHES STUD THREAD IN |
| Thread Length | 0.720 INCHES NOMINAL NUT THREAD IN |
| Nominal Thread Size | 0.250 INCHES NUT THREAD IN |
| Surface Treatment | CADMIUM OVERALL |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| Thread Series Designator | UNF NUT THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Material Document and Classification | AMS 6300 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6320 ASSN STD 2ND MATERIAL RESPONSE OR AMS 6323 ASSN STD 3RD MATERIAL RESPONSE |
| Thread Series Designator | UNS STUD THREAD |
| Thread Quantity Per Inch | 28 NUT THREAD |
| Nominal Thread Size | 0.250 INCHES STUD THREAD IN |
| Surface Treatment Document and Classification | AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Material | STEEL COMP 4037 OR STEEL COMP 8735 OR STEEL COMP 8740 |
| Thread Class | 3A NUT THREAD A |
| Thread Quantity Per Inch | 20 STUD THREAD |
| Thread Length | 0.780 INCHES NOMINAL STUD THREAD IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5307-00-155-1558 is a Stud,plain, manufactured by Textron Lycoming Inc Williamsport Plant, classified under FSC 5307 (No Item Name Available). Status: active.
NSN 5307-00-155-1558 has 2 cross-referenced part numbers: 25-29 (Textron Lycoming Inc Williamsport Plant), 25-29 (Satair A/s).
There are 12 known substitutes for 5307-00-155-1558: 5310-00-089-4035, 3220-00-204-4853, 3020-00-238-7670 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 25-29: Thread Pitch Diameters: +0.2208 TO 0.2221 INCHES STUD THREAD IN; Thread Length: 0.720 INCHES NOMINAL NUT THREAD IN; Nominal Thread Size: 0.250 INCHES NUT THREAD IN; Surface Treatment: CADMIUM OVERALL. 18 total characteristics are documented in the Federal Logistics Information System.