Pin Overall Length: 3.782 INCHES MINIMUM AND 3.842 INCHES MAXIMUM IN
Second End Relationship with First End: NOT IDENTICAL
Second End Style: SQUARE
Identification
NSN: 5315-00-261-3181
NIIN: 002613181
FSC: 5315 — Nails, Machine Keys, and Pins
FSG: 53 — Hardware and Abrasives
General Description
The Pin,tapered,plain, cataloged under National Stock Number 5315-00-261-3181, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5315-00-261-3181
Item Name
Pin,tapered,plain
FSC / FSG
5315 / 53 — Nails, Machine Keys, and Pins
Status
ACTIVE
First End Location
LARGE END
First End Style
RADIUS
Pin Taper
0.250 PER FOOT IN INCHES
Hardness Rating
37.0 ROCKWELL C NOMINAL OVERALL
Pin Overall Length
3.782 INCHES MINIMUM AND 3.842 INCHES MAXIMUM IN
Second End Relationship with First End
NOT IDENTICAL
Second End Style
SQUARE
Material
STEEL COMP 416 OVERALL
First End Corner Radius
0.734 INCHES MINIMUM AND 0.766 INCHES MAXIMUM IN
Reference Number Differentiating Characteristics
AS DIFFERENTIATED BY 1.125 IN. CHAIN SIZE IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items9
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5315-00-261-3182POSSIBLE MATCH
PIN,TAPERED,PLAIN
Possible match (shared part number)
5315-00-261-3185POSSIBLE MATCH
PIN,TAPERED,PLAIN
Possible match (shared part number)
5315-00-261-3190POSSIBLE MATCH
PIN,TAPERED,PLAIN
Possible match (shared part number)
5315-00-261-3194803-860062PC4POSSIBLE MATCH
PIN,TAPERED,PLAIN
Possible match (shared part number)Naval Ship Systems Command
5315-00-880-1283POSSIBLE MATCH
PIN,TAPERED,PLAIN
Possible match (shared part number)
5315-00-880-1284POSSIBLE MATCH
PIN,TAPERED,PLAIN
Possible match (shared part number)
5315-00-880-1286205063POSSIBLE MATCH
PIN,TAPERED,PLAIN
Possible match (shared part number)Naval Ship Systems Command
5315-00-880-1290860062PC4 NO 86287POSSIBLE MATCH
PIN,TAPERED,PLAIN
Possible match (shared part number)Naval Ship Systems Command
5315-01-328-0813S2603-860062PC4POSSIBLE MATCH
PIN,TAPERED,PLAIN
Possible match (shared part number)Naval Inventory Control Point Mechanicsburg
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
S2603-860062PC4
3/1Design control — primary reference
U.S. Government activity
Related Parts
5315-00-261-3182POSSIBLE MATCH
PIN,TAPERED,PLAIN
5315-00-261-3185POSSIBLE MATCH
PIN,TAPERED,PLAIN
5315-00-261-3190POSSIBLE MATCH
PIN,TAPERED,PLAIN
5315-00-261-3194POSSIBLE MATCH
PIN,TAPERED,PLAIN
803-860062PC4
5315-00-880-1283POSSIBLE MATCH
PIN,TAPERED,PLAIN
5315-00-880-1284POSSIBLE MATCH
PIN,TAPERED,PLAIN
5315-00-880-1286POSSIBLE MATCH
PIN,TAPERED,PLAIN
205063
5315-00-880-1290POSSIBLE MATCH
PIN,TAPERED,PLAIN
860062PC4 NO 86287
5315-01-328-0813POSSIBLE MATCH
PIN,TAPERED,PLAIN
S2603-860062PC4
Frequently Asked Questions
What is NSN 5315-00-261-3181?
NSN 5315-00-261-3181 is a Pin,tapered,plain, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
What NSN replaces 5315-00-261-3181?
9 possible matches (shared part number, not a government interchangeability claim): 5315-00-261-3182, 5315-00-261-3185, 5315-00-261-3190. Verify interchangeability with system specifications before substitution.
What are the specifications of 5315-00-261-3181?
Key specifications for 5315-00-261-3181: First End Location: LARGE END; First End Style: RADIUS; Pin Taper: 0.250 PER FOOT IN INCHES; Hardness Rating: 37.0 ROCKWELL C NOMINAL OVERALL. 10 specifications are documented in the U.S. Government catalog.
Is NSN 5315-00-261-3181 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.