Seal Assembly, Shaft, Spring Loade4320-01-146-6166

NSN 4320-01-146-6166 · NIIN 011466166 · Part number 312-N

Frederick Custom Machining Inc · FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors · CAGE 23515

Government record, cited

NSN 4320-01-146-6166 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-146-6166. Manufacturer of record part number: 312-N.

Also searched as 4320-01-146-6166 · 4320011466166 · NIIN 011466166 · 01-146-6166 · FSC 4320 Power and Hand Pumps · CAGE 23515 · 312-N · PK15128-7/8IN

Nearby stock numbers ← 4320-01-146-5950 Impeller, Pump, Centrifugal · 4320-01-146-6227 Pump-Motor Assembly →

Features

Seal Assembly,shaft,spring Loade — FSC 4320
General Characteristics Item Description: CONSISTS OF SHELL,CRES COMP 316; WASHER,CRES COMP 316; SEAL RING,CARBON; SPRING,CRES COMP 316; BELLOWS,RUBBER,SYNTHETIC MIL-P-5516 CL B; SEAT,TUNGSTEN CARBIDE STEEL
2 manufacturer part numbers on file
Manufacturer of record: Frederick Custom Machining Inc

Identification

NSN: 4320-01-146-6166
NIIN: 011466166
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors
Primary part number: 312-N
Manufacturer: Frederick Custom Machining Inc

General Description

The Seal Assembly,shaft,spring Loade, cataloged under National Stock Number 4320-01-146-6166, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Frederick Custom Machining Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4320-01-146-6166
Primary Part Number	312-N
Item Name	Seal Assembly,shaft,spring Loade
FSC / FSG	4320 / 43 — Power and Hand Pumps
Manufacturer	Frederick Custom Machining Inc
Status	ACTIVE
General Characteristics Item Description	CONSISTS OF SHELL,CRES COMP 316; WASHER,CRES COMP 316; SEAL RING,CARBON; SPRING,CRES COMP 316; BELLOWS,RUBBER,SYNTHETIC MIL-P-5516 CL B; SEAT,TUNGSTEN CARBIDE 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
312-N PRIMARY	Frederick Custom Machining Inc (USA)
PK15128-7/8IN	Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc (USA)

No interchangeability data on file.

Other items in FSC 4320 — Power and Hand Pumps

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

4320-00-001-1633

4320-00-001-1633 · Item name not on file

4320-00-001-2628

RETAINER AND PIN

4320-00-001-2629

HOUSING AND PIN

4320-00-001-2630

PUMP,CENTRIFUGAL

4320-00-001-2631

4320-00-001-2631 · Item name not on file

4320-00-001-2632

4320-00-001-2632 · Item name not on file

4320-00-001-3377

4320-00-001-3377 · Item name not on file

4320-00-001-3384

4320-00-001-3384 · Item name not on file

Frequently Asked Questions

What is NSN 4320-01-146-6166?

NSN 4320-01-146-6166 is a Seal Assembly,shaft,spring Loade, manufactured by Frederick Custom Machining Inc, classified under FSC 4320, Power and Hand Pumps. Status: active.

What part numbers are listed for NSN 4320-01-146-6166?

NSN 4320-01-146-6166 has 2 manufacturer part numbers on file: 312-N (Frederick Custom Machining Inc), PK15128-7/8IN (Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc).

What are the specifications of 312-N?

Key specifications for 312-N: General Characteristics Item Description: CONSISTS OF SHELL,CRES COMP 316; WASHER,CRES COMP 316; SEAL RING,CARBON; SPRING,CRES COMP 316; BELLOWS,RUBBER,SYNTHETIC MIL-P-5516 CL B; SEAT,TUNGSTEN CARBIDE STEEL. 1 specification is documented in the U.S. Government catalog.

Is NSN 4320-01-146-6166 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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