The Pin,piston, cataloged under National Stock Number 2810-00-857-3270, is classified within Federal Supply Class 2810 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Textron Lycoming Inc Williamsport Plant. Government technical data includes 12 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2810-00-857-3270 |
| Primary Part Number | 77857 |
| Item Name | Pin,piston |
| FSC / FSG | 2810 / 28 — No Item Name Available |
| Manufacturer | Textron Lycoming Inc Williamsport Plant |
| Status | ACTIVE |
| Body Style | CHAMFERED ENDS |
| Casehardening Indicator | CASEHARDENED |
| Metallic Hardness Rating | 73.0 MINIMUM ROCKWELL SUPERFICIAL 30-N |
| Material | STEEL COMP 8620 OR STEEL COMP 4620 |
| Material Document and Classification | AMS 6274 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6294 ASSN STD 2ND MATERIAL RESPONSE OR SAE 8620AQ ASSN STD 1ST MATERIAL RESPONSE |
| Test Data Document | 81349-MIL-I-6868 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| End Chamfer Angle in Deg | 45.0 |
| Body Length | 3.7450 INCHES MINIMUM AND 3.7500 INCHES MAXIMUM IN |
| Bore Style | INSIDE CHAMFER STRAIGHT-THRU BORE |
| Outside Diameter | 1.12430 INCHES MINIMUM AND 1.12460 INCHES MAXIMUM IN |
| Bore Diameter | 0.7620 INCHES MINIMUM AND 0.7630 INCHES MAXIMUM IN |
| Countersink Angle in Deg | 45.0 |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 77857 PRIMARY | Textron Lycoming Inc Williamsport Plant (USA) |
NSN 2810-00-857-3270 is a Pin,piston, manufactured by Textron Lycoming Inc Williamsport Plant, classified under FSC 2810 (No Item Name Available). Status: active.
NSN 2810-00-857-3270 has 1 cross-referenced part number: 77857 (Textron Lycoming Inc Williamsport Plant).
There are 3 known substitutes for 2810-00-857-3270: 5305-00-012-2159, 5315-00-565-0199, 5310-01-600-5609. Verify interchangeability with system specifications before substitution.
Key specifications for 77857: Body Style: CHAMFERED ENDS; Casehardening Indicator: CASEHARDENED; Metallic Hardness Rating: 73.0 MINIMUM ROCKWELL SUPERFICIAL 30-N; Material: STEEL COMP 8620 OR STEEL COMP 4620. 12 total characteristics are documented in the Federal Logistics Information System.