PartsTable TECHNICAL DATA SHEET

JULY 2026Technical Data Sheet

C33741ARetainer,disk,valve

Name: C33741A
SKU: 4820-01-507-4451

Griswold Industries Dba Cla-Val Co · NSN 4820-01-507-4451 · FSC 4820 · No Item Name Available

Verified by PartsTable

NSN 4820-01-507-4451 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-507-4451. Primary manufacturer part number: C33741A.

4820-01-507-4451 — No Item Name Available illustration

Features

Retainer,disk,valve — FSC 4820
Valve Design Control Activity: 86184
Material: COPPER ALLOY
4 verified cross-references
Primary manufacturer: Griswold Industries Dba Cla-Val Co

Applications

Flow control in piping systems
Pressure regulation
Steam and fluid isolation
Applications requiring Copper Alloy construction

General Description

The Retainer,disk,valve, cataloged under National Stock Number 4820-01-507-4451, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Griswold Industries Dba Cla-Val Co. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-507-4451
Primary Part Number	C33741A
Item Name	Retainer,disk,valve
FSC / FSG	4820 / 48 — No Item Name Available
Manufacturer	Griswold Industries Dba Cla-Val Co
Status	ACTIVE
Valve Design Control Activity	86184
Material	COPPER ALLOY

Lifecycle & Compliance

Acquisition Status	ACTIVE
HAZMAT	No

⇄ Verified Substitutes 5

5330-00-179-695060474 INTERCHANGEABLE

Gasket

Cummins Inc.

6530-01-044-8082 INTERCHANGEABLE

Cabinet,medicine,combination

4130-01-147-153860474 INTERCHANGEABLE

Condenser

Blissfield Manufacturing Company

3110-01-263-265960474 INTERCHANGEABLE

Retainer,ball,bearing

Waterous Company

4820-01-515-070260474 INTERCHANGEABLE

Valve,ball

Allied Systems Company Dba Allied Systems Co

Cross-Reference Index

Part Number	Manufacturer
60474	Griswold Industries Dba Cla-Val Co (USA)
C3741A	Griswold Industries Dba Cla-Val Co (USA)
C33741A PRIMARY	Griswold Industries Dba Cla-Val Co (USA)
60474 FIND NO. 8	Griswold Industries Dba Cla-Val Co (USA)

Related Parts

5330-00-179-6950INTERCHANGEABLE

GASKET

60474

6530-01-044-8082INTERCHANGEABLE

CABINET,MEDICINE,COMBINATION

4130-01-147-1538INTERCHANGEABLE

CONDENSER

60474

3110-01-263-2659INTERCHANGEABLE

RETAINER,BALL,BEARING

60474

4820-01-515-0702INTERCHANGEABLE

VALVE,BALL

60474

Frequently Asked Questions

What is NSN 4820-01-507-4451?

NSN 4820-01-507-4451 is a Retainer,disk,valve, manufactured by Griswold Industries Dba Cla-Val Co, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-507-4451?

NSN 4820-01-507-4451 has 4 cross-referenced part numbers: 60474 (Griswold Industries Dba Cla-Val Co), C3741A (Griswold Industries Dba Cla-Val Co), C33741A (Griswold Industries Dba Cla-Val Co), 60474 FIND NO. 8 (Griswold Industries Dba Cla-Val Co).

What NSN replaces 4820-01-507-4451?

There are 5 known substitutes for 4820-01-507-4451: 5330-00-179-6950, 6530-01-044-8082, 4130-01-147-1538 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of C33741A?

Key specifications for C33741A: Valve Design Control Activity: 86184; Material: COPPER ALLOY; Special Features: NHA VALVE,CHECK. 3 total characteristics are documented in the Federal Logistics Information System.

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

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