PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9861O-Ring

DP Mfg Inc · NSN 5331-01-485-5991 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-485-5991 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-485-5991. Primary manufacturer part number: 9861.
Features
  • O-Ring — FSC 5331
  • 3 verified cross-references
  • Primary manufacturer: DP Mfg Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-485-5991, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is DP Mfg Inc. This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersOshkosh Defense Llc (CAGE 75Q65); DP Mfg Inc (CAGE 58864); Oshkosh Corp (CAGE 45152)
Technical Specifications
ParameterValue
NSN5331-01-485-5991
Primary Part Number9861
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerDP Mfg Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
6250-00-270-4240 INTERCHANGEABLE
Lampholder
5360-00-362-3250 INTERCHANGEABLE
Spring,helical,compression
5999-00-445-4686986-1 INTERCHANGEABLE
Contact,electrical
Ward Leonard Ct Llc
6145-00-478-33143530978-0701 INTERCHANGEABLE
Cord,electrical
Kbr Wyle Services, Llc
5998-00-719-7240SM-C-500684 INTERCHANGEABLE
Circuit Card Assembly
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6515-01-569-8595338.08 INTERCHANGEABLE
Handle,insertion,tibial Nail
Depuy Synthes Sales Inc Dba Depuy Synthes Trauma Div Depuy Synthes Sales, Inc., D/b/a Depuy Synthes Trauma
Cross-Reference Index
Part NumberManufacturer
2CD521 Oshkosh Defense Llc (USA)
9861 PRIMARY DP Mfg Inc (USA)
2CD521 Oshkosh Corp (USA)
Related Parts
6250-00-270-4240INTERCHANGEABLE
LAMPHOLDER
5360-00-362-3250INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
5999-00-445-4686INTERCHANGEABLE
CONTACT,ELECTRICAL
986-1
6145-00-478-3314INTERCHANGEABLE
CORD,ELECTRICAL
3530978-0701
5998-00-719-7240INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
SM-C-500684
6515-01-569-8595INTERCHANGEABLE
HANDLE,INSERTION,TIBIAL NAIL
338.08

Frequently Asked Questions

What is NSN 5331-01-485-5991?

NSN 5331-01-485-5991 is a O-Ring, manufactured by DP Mfg Inc, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-485-5991?

NSN 5331-01-485-5991 has 3 cross-referenced part numbers: 2CD521 (Oshkosh Defense Llc), 9861 (DP Mfg Inc), 2CD521 (Oshkosh Corp).

What NSN replaces 5331-01-485-5991?

There are 6 known substitutes for 5331-01-485-5991: 6250-00-270-4240, 5360-00-362-3250, 5999-00-445-4686 and 3 more. Verify interchangeability with system specifications before substitution.

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