NSN 5330-00-171-6853 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-171-6853. Manufacturer of record part number: R557-49330BPC3.
Also searched as5330-00-171-6853 ·
5330001716853 ·
NIIN 001716853 ·
00-171-6853 ·
FSC 5330 Packing and Gasket Materials · CAGE 38056 · R557-49330BPC3
Cross-Sectional Thickness: 0.025 INCHES NOMINAL IN
Hardness Rating: 80.0 BRINELL STANDARD NOMINAL OVERALL
Style Designator: CIRCULAR
Cross-Sectional Shape Style: METAL
Outside Diameter: 3.250 INCHES NOMINAL IN
Aperture Diameter: 2.875 INCHES NOMINAL IN
Material: IRON OVERALL
Identification
NSN: 5330-00-171-6853
NIIN: 001716853
FSC: 5330 — Packing and Gasket Materials
FSG: 53 — Hardware and Abrasives
Primary part number: R557-49330BPC3
Manufacturer: Ashcroft Inc Dba Heise
General Description
The Gasket, cataloged under National Stock Number 5330-00-171-6853, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Ashcroft Inc Dba Heise. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5330-00-171-6853
Primary Part Number
R557-49330BPC3
Item Name
Gasket
FSC / FSG
5330 / 53 — Packing and Gasket Materials
Manufacturer
Ashcroft Inc Dba Heise
Status
ACTIVE
Cross-Sectional Thickness
0.025 INCHES NOMINAL IN
Hardness Rating
80.0 BRINELL STANDARD NOMINAL OVERALL
Style Designator
CIRCULAR
Cross-Sectional Shape Style
METAL
Outside Diameter
3.250 INCHES NOMINAL IN
Aperture Diameter
2.875 INCHES NOMINAL IN
Material
IRON OVERALL
Center to Center Distance
0.062 INCHES NOMINAL IN
Gage Thickness
0.019 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Other items in FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085
RETAINER
5330-00-000-0167
PARTS KIT,SEAL REPLACEMENT,MECHA
5330-00-000-5275
5330-00-000-5275 · Item name not on file
5330-00-001-1260
SEAL,NONMETALLIC SPECIAL SHAPED
5330-00-001-1833
SEAL,PLAIN ENCASED
5330-00-001-1844
GLAND,RESERVOIR,INDICATOR END
5330-00-001-1845
5330-00-001-1845 · Item name not on file
5330-00-001-1846
5330-00-001-1846 · Item name not on file
Frequently Asked Questions
What is NSN 5330-00-171-6853?
NSN 5330-00-171-6853 is a Gasket, manufactured by Ashcroft Inc Dba Heise, classified under FSC 5330, Packing and Gasket Materials. Status: active.
What part numbers are listed for NSN 5330-00-171-6853?
NSN 5330-00-171-6853 has 1 manufacturer part number on file: R557-49330BPC3 (Ashcroft Inc Dba Heise).
What are the specifications of R557-49330BPC3?
Key specifications for R557-49330BPC3: Cross-Sectional Thickness: 0.025 INCHES NOMINAL IN; Hardness Rating: 80.0 BRINELL STANDARD NOMINAL OVERALL; Style Designator: CIRCULAR; Cross-Sectional Shape Style: METAL. 9 specifications are documented in the U.S. Government catalog.
Is NSN 5330-00-171-6853 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.