PartsTable TECHNICAL DATA SHEET

JULY 2026Technical Data Sheet

18539N PC 5Washer,flat

Name: 18539N PC 5
SKU: 5310-01-139-4301

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 5310-01-139-4301 · FSC 5310 · No Item Name Available

Verified by PartsTable

NSN 5310-01-139-4301 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-139-4301. Primary manufacturer part number: 18539N PC 5.

5310-01-139-4301 — No Item Name Available illustration

Features

Washer,flat — FSC 5310
5 verified cross-references
Primary manufacturer: Leslie Controls, Inc. Dba Leslie Controls Inc

Applications

Structural fastening and assembly
Equipment mounting
Panel and housing attachment

General Description

The Washer,flat, cataloged under National Stock Number 5310-01-139-4301, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. This item has 5 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts

Item Name	Washer,flat
FSC / FSG	5310 — No Item Name Available (FSG 53)
Manufacturers	Leslie Controls, Inc. Dba Leslie Controls Inc (CAGE 35795)

Technical Specifications

Parameter	Value
NSN	5310-01-139-4301
Primary Part Number	18539N PC 5
Item Name	Washer,flat
FSC / FSG	5310 / 53 — No Item Name Available
Manufacturer	Leslie Controls, Inc. Dba Leslie Controls Inc
Status	CANCELLED

Lifecycle & Compliance

Acquisition Status	CANCELLED
HAZMAT	No

⇄ Verified Substitutes 11

5999-00-215-4048029037 INTERCHANGEABLE

Contact,electrical

Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems

3455-00-232-409619944 INTERCHANGEABLE

Reamer,machine

Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa

5950-00-412-082770089 INTERCHANGEABLE

Transformer,power

Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp

4720-00-836-7189100R5-4 INTERCHANGEABLE

Hose,nonmetallic

Sae International Dba Sae International

5930-00-957-9363 INTERCHANGEABLE

Switch,sensitive

3110-01-022-1786 INTERCHANGEABLE

Bearing

5330-01-079-71323069098 INTERCHANGEABLE

Gasket

Cummins Inc.

3120-01-110-7850 INTERCHANGEABLE

Bearing,sleeve

6645-01-231-4764 INTERCHANGEABLE

Timer,interval

5365-01-275-796170089 INTERCHANGEABLE

Shim

Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.

Cross-Reference Index

Part Number	Manufacturer
21766	Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
18539N REVC PC 5	Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
18539N PC 5 PRIMARY	Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
70089	Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
N70089 PRIMARY	Leslie Controls, Inc. Dba Leslie Controls Inc (USA)

Related Parts

5999-00-215-4048INTERCHANGEABLE

CONTACT,ELECTRICAL

029037

3455-00-232-4096INTERCHANGEABLE

REAMER,MACHINE

19944

5950-00-412-0827INTERCHANGEABLE

TRANSFORMER,POWER

70089

4720-00-836-7189INTERCHANGEABLE

HOSE,NONMETALLIC

100R5-4

5930-00-957-9363INTERCHANGEABLE

SWITCH,SENSITIVE

3110-01-022-1786INTERCHANGEABLE

BEARING

5330-01-079-7132INTERCHANGEABLE

GASKET

3069098

3120-01-110-7850INTERCHANGEABLE

BEARING,SLEEVE

6645-01-231-4764INTERCHANGEABLE

TIMER,INTERVAL

5365-01-275-7961INTERCHANGEABLE

SHIM

70089

1005-01-480-6817INTERCHANGEABLE

BUTTSTOCK,SUBASSEMBLY

70089

Frequently Asked Questions

What is NSN 5310-01-139-4301?

NSN 5310-01-139-4301 is a Washer,flat, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-01-139-4301?

NSN 5310-01-139-4301 has 5 cross-referenced part numbers: 21766 (Leslie Controls, Inc. Dba Leslie Controls Inc), 18539N REVC PC 5 (Leslie Controls, Inc. Dba Leslie Controls Inc), 18539N PC 5 (Leslie Controls, Inc. Dba Leslie Controls Inc), 70089 (Leslie Controls, Inc. Dba Leslie Controls Inc), N70089 (Leslie Controls, Inc. Dba Leslie Controls Inc).

What NSN replaces 5310-01-139-4301?

There are 11 known substitutes for 5310-01-139-4301: 5999-00-215-4048, 3455-00-232-4096, 5950-00-412-0827 and 8 more. Verify interchangeability with system specifications before substitution.

Is NSN 5310-01-139-4301 still in active supply?

NSN 5310-01-139-4301 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.

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