PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

X9994A ITEM B3331Retainer,packing

Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic · NSN 5330-01-352-7777 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-01-352-7777 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-352-7777. Primary manufacturer part number: X9994A ITEM B3331.
Features
  • Retainer,packing — FSC 5330
  • Peripheral Diameter: 4.370 INCHES NOMINAL IN
  • Material: IRON OVERALL
  • Cross-Sectional Shape Style: FLANGE
  • Cross-Sectional Height: 0.640 INCHES NOMINAL IN
  • Center Hole Diameter: 2.000 INCHES NOMINAL IN
  • Color: GRAY/GREY
  • 2 verified cross-references
Applications
  • Applications requiring Iron Overall construction
General Description

The Retainer,packing, cataloged under National Stock Number 5330-01-352-7777, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-01-352-7777
Primary Part NumberX9994A ITEM B3331
Item NameRetainer,packing
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerTwin Disc, Incorporated Dba Twin Disc Mid-Atlantic
StatusACTIVE
Peripheral Diameter4.370 INCHES NOMINAL IN
MaterialIRON OVERALL
Cross-Sectional Shape StyleFLANGE
Cross-Sectional Height0.640 INCHES NOMINAL IN
Center Hole Diameter2.000 INCHES NOMINAL IN
ColorGRAY/GREY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
2530-00-537-0772FD2108 INTERCHANGEABLE
Cup,hydraulic Brake Cylinder
Federal Mogul Corp Sub Wagner Brake Moog Automotive Div
Cross-Reference Index
Part NumberManufacturer
X9994A ITEM B3331 Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
B3331 Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
Related Parts
2530-00-537-0772INTERCHANGEABLE
CUP,HYDRAULIC BRAKE CYLINDER
FD2108

Frequently Asked Questions

What is NSN 5330-01-352-7777?

NSN 5330-01-352-7777 is a Retainer,packing, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-01-352-7777?

NSN 5330-01-352-7777 has 2 cross-referenced part numbers: X9994A ITEM B3331 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), B3331 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic).

What NSN replaces 5330-01-352-7777?

There is 1 known substitute for 5330-01-352-7777: 2530-00-537-0772. Verify interchangeability with system specifications before substitution.

What are the specifications of X9994A ITEM B3331?

Key specifications for X9994A ITEM B3331: Peripheral Diameter: 4.370 INCHES NOMINAL IN; Material: IRON OVERALL; Cross-Sectional Shape Style: FLANGE; Cross-Sectional Height: 0.640 INCHES NOMINAL IN. 6 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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