PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2640-674X1 PIECE NO. 21CPRetainer,packing

Naval Inventory Control Point Mechanicsburg · NSN 5330-01-071-4634 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-01-071-4634 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-071-4634. Primary manufacturer part number: 2640-674X1 PIECE NO. 21CP.
Features
  • Retainer,packing — FSC 5330
  • Cross-Sectional Shape Style: SQUARE
  • Material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL
  • Joint Type: SCARF-BUTT OVERALL
  • Departure From Cited Document: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
  • Cut Type: RECTANGULAR OVERALL
  • Material Document and Classification: MIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Cross-Sectional Thickness: 0.075 INCHES MINIMUM AND 0.087 INCHES MAXIMUM IN
Applications
  • Applications requiring Plastic Polytetrafluoroethylene Overall construction
General Description

The Retainer,packing, cataloged under National Stock Number 5330-01-071-4634, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 13 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5330-01-071-4634
Primary Part Number2640-674X1 PIECE NO. 21CP
Item NameRetainer,packing
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerNaval Inventory Control Point Mechanicsburg
StatusCANCELLED
Cross-Sectional Shape StyleSQUARE
MaterialPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
Joint TypeSCARF-BUTT OVERALL
Departure From Cited DocumentCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
Cut TypeRECTANGULAR OVERALL
Material Document and ClassificationMIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Cross-Sectional Thickness0.075 INCHES MINIMUM AND 0.087 INCHES MAXIMUM IN
Peripheral Diameter1.620 INCHES MINIMUM AND 1.622 INCHES MAXIMUM IN
Cross-Sectional Height0.025 INCHES MINIMUM AND 0.029 INCHES MAXIMUM IN
Center Hole Diameter1.500 INCHES NOMINAL IN
Distance Between Ends0.047 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
Angle25.0 DEGREES MINIMUM AND 35.0 DEGREES MAXIMUM
Criticality Code JustificationZZZW
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5330-00-171-6695 INTERCHANGEABLE
Retainer,packing
Cross-Reference Index
Part NumberManufacturer
2640-674X1 PIECE NO. 21CP Naval Inventory Control Point Mechanicsburg (USA)
SAE-AS8791 Sae International Dba Sae International (USA)
MS28782-27 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
2641-405-01 ITEM 71CP Naval Inventory Control Point Mechanicsburg (USA)
845-2180761 PIECE NO. 21 Naval Sea Systems Command (USA)
2641-405-01 ITEM 71 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
256202 PIECE 21 Huntington Ingalls Inc Div Newport News Shipbuilding (USA)
2640-674X1 PIECE NO. 21 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
516-2005919ASSYB PIECE 33 Naval Ship Systems Command (USA)
MS28782 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
845-2180761 PIECE NO. 21CP Naval Inventory Control Point Mechanicsburg (USA)
MS28782-27CP Naval Inventory Control Point Mechanicsburg (USA)
516-2005919ASSYB PIECE 33CP Naval Inventory Control Point Mechanicsburg (USA)
Related Parts
5330-00-171-6695INTERCHANGEABLE
RETAINER,PACKING

Frequently Asked Questions

What is NSN 5330-01-071-4634?

NSN 5330-01-071-4634 is a Retainer,packing, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5330 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5330-01-071-4634?

NSN 5330-01-071-4634 has 13 cross-referenced part numbers: 2640-674X1 PIECE NO. 21CP (Naval Inventory Control Point Mechanicsburg), SAE-AS8791 (Sae International Dba Sae International), MS28782-27 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 2641-405-01 ITEM 71CP (Naval Inventory Control Point Mechanicsburg), 845-2180761 PIECE NO. 21 (Naval Sea Systems Command) and 8 more.

What NSN replaces 5330-01-071-4634?

There is 1 known substitute for 5330-01-071-4634: 5330-00-171-6695. Verify interchangeability with system specifications before substitution.

What are the specifications of 2640-674X1 PIECE NO. 21CP?

Key specifications for 2640-674X1 PIECE NO. 21CP: Cross-Sectional Shape Style: SQUARE; Material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL; Joint Type: SCARF-BUTT OVERALL; Departure From Cited Document: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5330-01-071-4634 still in active supply?

NSN 5330-01-071-4634 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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