Ring, Retaining5325-01-018-0004

NSN 5325-01-018-0004 · NIIN 010180004 · Part number 16849BC

Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S · FSC 5325 — Fastening Devices · FSG 53 — Hardware and Abrasives · CAGE 73760

Government record, cited

NSN 5325-01-018-0004 — this item is cataloged by the U.S. Government under National Stock Number 5325-01-018-0004. Manufacturer of record part number: 16849BC.

Also searched as 5325-01-018-0004 · 5325010180004 · NIIN 010180004 · 01-018-0004 · FSC 5325 Fastening Devices · CAGE 73760 · 16849BC

Nearby stock numbers ← 5325-01-018-0003 Ring, Retaining · 5325-01-018-0092 Grommet, Nonmetallic →

Features

Ring,retaining — FSC 5325
Material Hardness Rating: 47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
Usage Design: INTERNAL
Cross-Sectional Shape Style: RECTANGULAR
Outside Diameter: 2.500 INCHES NOMINAL IN
Major Thickness: 0.054 INCHES NOMINAL IN
Casehardening Indicator: NOT CASEHARDENED
Ring Style: INTERNAL

Identification

NSN: 5325-01-018-0004
NIIN: 010180004
FSC: 5325 — Fastening Devices
FSG: 53 — Hardware and Abrasives
Primary part number: 16849BC
Manufacturer: Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S

General Description

The Ring,retaining, cataloged under National Stock Number 5325-01-018-0004, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5325-01-018-0004
Primary Part Number	16849BC
Item Name	Ring,retaining
FSC / FSG	5325 / 53 — Fastening Devices
Manufacturer	Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S
Status	ACTIVE
Material Hardness Rating	47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
Usage Design	INTERNAL
Cross-Sectional Shape Style	RECTANGULAR
Outside Diameter	2.500 INCHES NOMINAL IN
Major Thickness	0.054 INCHES NOMINAL IN
Casehardening Indicator	NOT CASEHARDENED
Ring Style	INTERNAL
Material	STEEL

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

Cross-Reference Index

Part Number	Manufacturer
16849BC PRIMARY	Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S (USA)

No interchangeability data on file.

Other items in FSC 5325 — Fastening Devices

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5325-00-000-1884

5325-00-000-1884 · Item name not on file

5325-00-000-9988

5325-00-000-9988 · Item name not on file

5325-00-001-1567

RING,RETAINING

5325-00-001-2043

FASTENER,PANEL

5325-00-001-3842

RING,RETAINING

5325-00-001-3858

5325-00-001-3858 · Item name not on file

5325-00-001-3871

RING,RETAINING

5325-00-001-4317

RING,RETAINING

Frequently Asked Questions

What is NSN 5325-01-018-0004?

NSN 5325-01-018-0004 is a Ring,retaining, manufactured by Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S, classified under FSC 5325, Fastening Devices. Status: active.

What part numbers are listed for NSN 5325-01-018-0004?

NSN 5325-01-018-0004 has 1 manufacturer part number on file: 16849BC (Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S).

What are the specifications of 16849BC?

Key specifications for 16849BC: Material Hardness Rating: 47.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM; Usage Design: INTERNAL; Cross-Sectional Shape Style: RECTANGULAR; Outside Diameter: 2.500 INCHES NOMINAL IN. 8 specifications are documented in the U.S. Government catalog.

Is NSN 5325-01-018-0004 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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