PartsTable TECHNICAL DATA SHEET

NSN 5315-01-721-3256Government record, cited

Key, Machine5315-01-721-3256

NSN 5315-01-721-3256 · NIIN 017213256 · Part number 721-8541937-10

Naval Sea Systems Command · FSC 5315 — Nails, Machine Keys, and Pins · FSG 53 — Hardware and Abrasives · CAGE 53711

Government record, cited

NSN 5315-01-721-3256 — this item is cataloged by the U.S. Government under National Stock Number 5315-01-721-3256. Manufacturer of record part number: 721-8541937-10.

Also searched as 5315-01-721-3256 · 5315017213256 · NIIN 017213256 · 01-721-3256 · FSC 5315 Nails, Machine Keys, and Pins · CAGE 53711 · 721-8541937-10 · 8541936 · R8611704-10 · 31-16-0604-TOL · LSA000514-10 · 8541937

Nearby stock numbers ← 5315-01-721-3202 Pin, Shoulder, Headless · 5315-01-721-3273 Pin, Straight, Headless →

5315-01-721-3256 — Nails, Machine Keys, and Pins

Features

Key,machine — FSC 5315
2 manufacturer part numbers on file
Manufacturer of record: Naval Sea Systems Command

Identification

NSN: 5315-01-721-3256
NIIN: 017213256
FSC: 5315 — Nails, Machine Keys, and Pins
FSG: 53 — Hardware and Abrasives
Primary part number: 721-8541937-10
Manufacturer: Naval Sea Systems Command

General Description

The Key,machine, cataloged under National Stock Number 5315-01-721-3256, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Catalog Facts

Item Name	Key,machine
FSC / FSG	5315 — Nails, Machine Keys, and Pins (FSG 53)
Manufacturers	Naval Sea Systems Command (CAGE 53711)

Technical Specifications

Parameter	Value
NSN	5315-01-721-3256
Primary Part Number	721-8541937-10
Item Name	Key,machine
FSC / FSG	5315 / 53 — Nails, Machine Keys, and Pins
Manufacturer	Naval Sea Systems Command
Status	ACTIVE

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 Items 8

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

5315-01-721-3273721-8541937-3 POSSIBLE MATCH

PIN,STRAIGHT,HEADLESS

Possible match (shared part number)Naval Sea Systems Command

3040-01-721-3339721-8541937-12 POSSIBLE MATCH

GEARSHAFT,SPUR

Possible match (shared part number)Naval Sea Systems Command

5340-01-721-3492721-8541937-7 POSSIBLE MATCH

DOOR,ACCESS,UTILITY

Possible match (shared part number)Naval Sea Systems Command

5305-01-721-3505721-8541936-29 POSSIBLE MATCH

SETSCREW

Possible match (shared part number)Naval Sea Systems Command

5330-01-721-3723721-8541937-18 POSSIBLE MATCH

GASKET

Possible match (shared part number)Naval Sea Systems Command

5305-01-721-3741721-8541936-14 POSSIBLE MATCH

SCREW,MACHINE

Possible match (shared part number)Naval Sea Systems Command

3040-01-721-3743721-8541937-9 POSSIBLE MATCH

SHAFT,STRAIGHT

Possible match (shared part number)Naval Sea Systems Command

5340-01-721-3785721-8541936-A1 POSSIBLE MATCH

DOOR,ACCESS,UTILITY

Possible match (shared part number)Naval Sea Systems Command

Cross-Reference Index

Part Number	Manufacturer
721-8541937-10 PRIMARY	Naval Sea Systems Command (USA)
721-8541936-20	Naval Sea Systems Command (USA)

Reference documents

Reference	Meaning
8541936	D/9 Drawing number reference only Naval Sea Systems Command
R8611704-10	C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity
31-16-0604-TOL	C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity
LSA000514-10	C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity
8541937	D/9 Drawing number reference only Naval Sea Systems Command
LSA000706-20	C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity
R8611703-20	C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity

Related Parts

5315-01-721-3273POSSIBLE MATCH

PIN,STRAIGHT,HEADLESS

721-8541937-3

3040-01-721-3339POSSIBLE MATCH

GEARSHAFT,SPUR

721-8541937-12

5340-01-721-3492POSSIBLE MATCH

DOOR,ACCESS,UTILITY

721-8541937-7

5305-01-721-3505POSSIBLE MATCH

SETSCREW

721-8541936-29

5330-01-721-3723POSSIBLE MATCH

GASKET

721-8541937-18

5305-01-721-3741POSSIBLE MATCH

SCREW,MACHINE

721-8541936-14

3040-01-721-3743POSSIBLE MATCH

SHAFT,STRAIGHT

721-8541937-9

5340-01-721-3785POSSIBLE MATCH

DOOR,ACCESS,UTILITY

721-8541936-A1

Frequently Asked Questions

What is NSN 5315-01-721-3256?

NSN 5315-01-721-3256 is a Key,machine, manufactured by Naval Sea Systems Command, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.

What part numbers are listed for NSN 5315-01-721-3256?

NSN 5315-01-721-3256 has 2 manufacturer part numbers on file: 721-8541937-10 (Naval Sea Systems Command), 721-8541936-20 (Naval Sea Systems Command).

What NSN replaces 5315-01-721-3256?

8 possible matches (shared part number, not a government interchangeability claim): 5315-01-721-3273, 3040-01-721-3339, 5340-01-721-3492. Verify interchangeability with system specifications before substitution.

Is NSN 5315-01-721-3256 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.

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