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Technical Data Sheet
PartsTable / COMPONENT / MIL-H-7938
MIL-H-7938 ✓ Verified by PartsTable
— · PIPE SECTION
WHAT YOU NEED TO KNOW
Schedule = wall thickness, NOT diameter Nominal pipe size != actual OD
Sch 40 and Sch 80 same OD, different wall
PRODUCT OVERVIEW

MOUNTING BASE,ELECTRICAL EQUIPME. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR TUBE, temp_rating: -40.0 FAHRENHEIT AND 250.0 FAHRENHEIT SINGLE RESPONSE DEGF, inside_diameter: 0.500 INCHES NOMINAL IN, outside_diameter: 0.938 INCHES MINIMUM AND 1.031 INCHES MAXIMUM IN, burst_test_pressure: 600.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS, inside_surface_condition: SMOOTH. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-142-1372, 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
MIL-H-7938
NSN: 4720-00-142-1372
FSC: 4720
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR TUBE
temp_rating-40.0 FAHRENHEIT AND 250.0 FAHRENHEIT SINGLE RESPONSE DEGF
inside_diameter0.500 INCHES NOMINAL IN
outside_diameter0.938 INCHES MINIMUM AND 1.031 INCHES MAXIMUM IN
burst_test_pressure600.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS
inside_surface_conditionSMOOTH
cross-sectional_shape_styleROUND
nondefinitive_spec/std_data8 SIZE
specification/standard_data81349-MIL-H-7938 GOVERNMENT SPECIFICATION
layer_composition_and_location1ST LAYER BRAIDED ASBESTOS CORD AND 2ND LAYER BRAIDED FABRIC AND OUTER LAYER MOLDED RUBBER, CHLOROPRENE
outer_covering_environmental_protectionABRASION RESISTANT AND FIRE RETARDANT AND FUEL RESISTANT AND HYDRAULIC SOLUTION RESISTANT AND MILDEW RESISTANT AND OIL RESISTANT AND OZONE RESISTANT AND WEATHERPROOF
NSN4720-00-142-1372
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: MIL-H-7938 · OEM ⚠ VERIFY BEFORE ORDERING Schedule = wall thickness, NOT pipe diameter. Sch 40 and Sch 80 have the same OD but different wall thickness. Nominal pipe size ≠ actual OD — a 1" pipe is actually 1.315" OD ✓ BROKER TIP Sch 40 = standard wall, Sch 80 = heavy wall (higher pressure), Sch 160 = extra heavy. Seamless pipe is required for high-pressure applications — welded pipe has lower ratings PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
INSIDE SURFACE CONDITION: SMOOTH
•
TEMP RATING: -40.0 FAHRENHEIT AND 250.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
SPECIFICATION/STANDARD DATA: 81349-MIL-H-7938 GOVERNMENT SPECIFICATION
•
OUTER COVERING ENVIRONMENTAL PROTECTION: FIRE RETARDANT AND FUEL RESISTANT AND OZONE RESISTANT AND COLD RESISTANT
•
OUTSIDE DIAMETER: 2.219 INCHES MINIMUM AND 2.344 INCHES MAXIMUM IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR TUBE
•
NONDEFINITIVE SPEC/STD DATA: 28 SIZE
•
BURST TEST PRESSURE: 350.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS
TECHNICAL CHARACTERISTICS (FLIS)
INSIDE SURFACE CONDITIONSMOOTH
TEMP RATING-40.0 FAHRENHEIT AND 250.0 FAHRENHEIT SINGLE RESPONSE DEGF
SPECIFICATION/STANDARD DATA81349-MIL-H-7938 GOVERNMENT SPECIFICATION
OUTER COVERING ENVIRONMENTAL PROTECTIONFIRE RETARDANT AND FUEL RESISTANT AND OZONE RESISTANT AND COLD RESISTANT
OUTSIDE DIAMETER2.219 INCHES MINIMUM AND 2.344 INCHES MAXIMUM IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR TUBE
NONDEFINITIVE SPEC/STD DATA28 SIZE
BURST TEST PRESSURE350.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS
MEASURING METHOD AND LENGTH120.000 INCHES NOMINAL OVERALL IN
INSIDE DIAMETER1.750 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
735327Interchangeable
interchangeable cross-reference
interchangeable
M7938-20-10Interchangeable
interchangeable cross-reference
interchangeable
H8Interchangeable
interchangeable cross-reference
interchangeable
M7938-10-10Interchangeable
interchangeable cross-reference
interchangeable
MIL-H-7938Interchangeable
interchangeable cross-reference
interchangeable
0839753Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-H-7938?
MIL-H-7938 is a MOUNTING BASE,ELECTRICAL EQUIPME.
What parts can replace MIL-H-7938?
There are 12 known substitutes for MIL-H-7938: 735327, M7938-20-10, H8 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-H-7938?
MIL-H-7938 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-142-1372. This indicates validated use in U.S. government and defense supply chains.
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Last verified: July 2026