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MDC1027M-S — CAP,PROTECTIVE,DUST AND MOISTURE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

MDC1027M-S: CAP,PROTECTIVE,DUST AND MOISTURE.

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: STEEL COMP 303, design_type: THREADED, thread_class: 2B, surface_treatment: PASSIVATE, width_across_flats: 0.307 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN, round_cap_outside_surface_condition: SMOOTH. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-464-1755, 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
MDC1027M-S
NSN: 5340-01-464-1755
FSC: 5340 — Hardware, Commercial
CAGE: 52335 — DAL-TECH DEVICES, INC. DBA DAL-TECH DEVICES INC DIV DAL-TEC DEVICES, INC (USA)
SPECIFICATIONS
materialSTEEL COMP 303
design_typeTHREADED
thread_class2B
surface_treatmentPASSIVATE
width_across_flats0.307 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN
round_cap_outside_surface_conditionSMOOTH
material_document_and_classificationASTM A582, TYPE 303 ASSN STD SINGLE MATERIAL RESPONSE
thread_size_and_series/type_designator.250-36 UNS
surface_treatment_document_and_classificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE
connector_nominal_thread_size_for_which_designed0.250 INCHES IN
NSN5340-01-464-1755
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MDC1027M-S 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
•
WIDTH ACROSS FLATS: 0.307 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE
•
DESIGN TYPE: THREADED
•
CONNECTOR NOMINAL THREAD SIZE FOR WHICH DESIGNED: 0.250 INCHES IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A582, TYPE 303 ASSN STD SINGLE MATERIAL RESPONSE
•
SURFACE TREATMENT: PASSIVATE
•
THREAD CLASS: 2B
•
MATERIAL: STEEL COMP 303
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.307 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE
DESIGN TYPETHREADED
CONNECTOR NOMINAL THREAD SIZE FOR WHICH DESIGNED0.250 INCHES IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582, TYPE 303 ASSN STD SINGLE MATERIAL RESPONSE
SURFACE TREATMENTPASSIVATE
THREAD CLASS2B
MATERIALSTEEL COMP 303
THREAD SIZE AND SERIES/TYPE DESIGNATOR.250-36 UNS
ROUND CAP OUTSIDE SURFACE CONDITIONSMOOTH
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 2
A3249624-2Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
A3249624-1Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MDC1027M-S?
MDC1027M-S is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace MDC1027M-S?
There are 2 known substitutes for MDC1027M-S: A3249624-2, A3249624-1. Substitute compatibility should be verified for your specific system.
What is the NSN for MDC1027M-S?
MDC1027M-S is cataloged in the U.S. Government catalog under NSN 5340-01-464-1755. This indicates validated use in U.S. government and defense supply chains.
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