PartsTable
Technical Data Sheet
Download PDF

51364B — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

51364B: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include width: 5.500 INCHES NOMINAL IN, length: 6.750 INCHES NOMINAL IN, material: STEEL, slot_width: 0.406 INCHES NOMINAL IN, body_radius: 2.750 INCHES NOMINAL IN, corner_radius: 0.562 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-606-2240, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
51364B
NSN: 5340-00-606-2240
FSC: 5340 — Hardware, Commercial
CAGE: 05073 — BABCOCK & WILCOX CO (USA)
SPECIFICATIONS
width5.500 INCHES NOMINAL IN
length6.750 INCHES NOMINAL IN
materialSTEEL
slot_width0.406 INCHES NOMINAL IN
body_radius2.750 INCHES NOMINAL IN
corner_radius0.562 INCHES NOMINAL IN
body_thickness0.437 INCHES NOMINAL IN
flange_thickness0.375 INCHES NOMINAL IN
features_providedOBSERVATION FACILITY
securing_device_typeTHREADED FASTENER
peripheral_shape_styleDIAMOND, ROUNDED CORNERS, TWO HOLES
cross-sectional_shape_styleFLAT, SQUARE OR RECTANGULAR RIB REINFORCED
NSN5340-00-606-2240
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 51364B MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CORNER RADIUS: 0.562 INCHES NOMINAL IN
•
LENGTH: 6.750 INCHES NOMINAL IN
•
DISTANCE BETWEEN HOLES ALONG LENGTH: 5.624 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.375 INCHES NOMINAL IN
•
MOUNTING OPENING SHAPE STYLE: OPEN VERTICAL CURVED SLOT
•
CROSS-SECTIONAL SHAPE STYLE: FLAT, SQUARE OR RECTANGULAR RIB REINFORCED
•
FEATURES PROVIDED: OBSERVATION FACILITY
•
SECURING DEVICE TYPE: THREADED FASTENER
TECHNICAL CHARACTERISTICS
CORNER RADIUS0.562 INCHES NOMINAL IN
LENGTH6.750 INCHES NOMINAL IN
DISTANCE BETWEEN HOLES ALONG LENGTH5.624 INCHES NOMINAL IN
FLANGE THICKNESS0.375 INCHES NOMINAL IN
MOUNTING OPENING SHAPE STYLEOPEN VERTICAL CURVED SLOT
CROSS-SECTIONAL SHAPE STYLEFLAT, SQUARE OR RECTANGULAR RIB REINFORCED
FEATURES PROVIDEDOBSERVATION FACILITY
SECURING DEVICE TYPETHREADED FASTENER
BODY RADIUS2.750 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLEDIAMOND, ROUNDED CORNERS, TWO HOLES
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 4
128512E PIECE 5Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
128512EPC55AReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
2073FPC54Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
5488EPC55Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 51364B?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 51364B?
51364B is a COVER,ACCESS.
What parts can replace 51364B?
There are 4 known substitutes for 51364B: 128512E PIECE 5, 128512EPC55A, 2073FPC54 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 51364B?
51364B is cataloged in the U.S. Government catalog under NSN 5340-00-606-2240. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 51364B

✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.