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17C057-3 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

17C057-3: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include body_thickness: 0.830 INCHES NOMINAL IN, outside_diameter: 4.000 INCHES NOMINAL IN, special_features: INAVY: PORT, DESICCANT, AIRCRAFT; SINGLE HOLE CONFIGURATION 2.022 INCH DIAMETER IN, securing_device_type: THREADED FASTENER, peripheral_shape_style: ROUND, ONE HOLE, end_item_identification: TURBO PROP ENGINES (T56). This part is cataloged in the U.S.

Government catalog under NSN 5340-01-533-4364, 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
17C057-3
NSN: 5340-01-533-4364
FSC: 5340 — Hardware, Commercial
CAGE: 21106 — FLEXTRON INDUSTRIES, INC. DIV FLEXTRON INDUSTRIES (USA)
SPECIFICATIONS
body_thickness0.830 INCHES NOMINAL IN
outside_diameter4.000 INCHES NOMINAL IN
special_featuresINAVY: PORT, DESICCANT, AIRCRAFT; SINGLE HOLE CONFIGURATION 2.022 INCH DIAMETER IN
securing_device_typeTHREADED FASTENER
peripheral_shape_styleROUND, ONE HOLE
end_item_identificationTURBO PROP ENGINES (T56)
cross-sectional_shape_styleFLAT
nondefinitive_spec/std_dataII TYPE AND I CLASS
specification/standard_data81343 - SAE AS5135 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
part_name_assigned_by_controlling_agencyPORT DESICCANT
bolt_hole_centerline_to_nearest_edge_distance0.989 INCHES NOMINAL IN
NSN5340-01-533-4364
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 17C057-3 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
•
CROSS-SECTIONAL SHAPE STYLE: FLAT
•
OUTSIDE DIAMETER: 4.000 INCHES NOMINAL IN
•
BOLT HOLE CENTERLINE TO NEAREST EDGE DISTANCE: 0.989 INCHES NOMINAL IN
•
SECURING DEVICE TYPE: THREADED FASTENER
•
SPECIFICATION/STANDARD DATA: 81343 - SAE AS5135 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
NONDEFINITIVE SPEC/STD DATA: II TYPE AND I CLASS
•
PERIPHERAL SHAPE STYLE: ROUND, ONE HOLE
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL SHAPE STYLEFLAT
OUTSIDE DIAMETER4.000 INCHES NOMINAL IN
BOLT HOLE CENTERLINE TO NEAREST EDGE DISTANCE0.989 INCHES NOMINAL IN
SECURING DEVICE TYPETHREADED FASTENER
SPECIFICATION/STANDARD DATA81343 - SAE AS5135 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NONDEFINITIVE SPEC/STD DATAII TYPE AND I CLASS
SPECIAL FEATURESINAVY: PORT, DESICCANT, AIRCRAFT; SINGLE HOLE CONFIGURATION 2.022 INCH DIAMETER IN
PERIPHERAL SHAPE STYLEROUND, ONE HOLE
PART NAME ASSIGNED BY CONTROLLING AGENCYPORT DESICCANT
END ITEM IDENTIFICATIONTURBO PROP ENGINES (T56)
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 17C057-3?
17C057-3 is a COVER,ACCESS.
What is the NSN for 17C057-3?
17C057-3 is cataloged in the U.S. Government catalog under NSN 5340-01-533-4364. This indicates validated use in U.S. government and defense supply chains.
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