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5001003 — ADAPTER,STRAIGHT,FLANGE TO PIPE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

5001003: ADAPTER,STRAIGHT,FLANGE TO PIPE.

ADAPTER,STRAIGHT,FLANGE TO PIPE. Key specifications include material: PLASTIC POLYCHLOROTRIFLUOROETHYLENE OVERALL, seal_width: 0.045 INCHES NOMINAL IN, construction: ONE-PIECE, housing_bore_diameter: 0.562 INCHES NOMINAL IN, end_item_identification: VALVE, BALL, accommodated_shaft_diameter: 0.437 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-031-0920, 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
5001003
NSN: 5310-00-031-0920
NIINs: 000310920, 008811611, 010619242, 011224310, 011620110, 011887772, 012285628, 012727536, 012727698, 013217252, 013316138, 013326818, 013326819, 013650880, 013650882, 013653008, 013663050, 013776862, 013776863, 013991003, 014090084, 014120280, 014144386, 014144390, 014153186, 014204145, 014264908, 014284334, 014303861, 014350339, 014354695, 014354700, 014358226, 014358803, 014366204, 014373337, 014375781, 014378008, 014378014, 014400875, 014401474, 014418607, 014419253, 014419749, 014420389, 014420411, 014422642, 014433873, 014433878, 014433883, 014435138, 014495856, 014495865, 014495868, 014495869, 014502327, 014502506, 014504723, 014508455, 014514221, 014515590, 014538058, 014540500, 014544382, 014625782, 014625796, 014625801, 014625809, 014625844, 014628619, 014628621, 014632501, 014656076, 014656444, 014656452, 014669144, 014689622, 014696946, 014696982, 014696985, 014696994, 014697006, 014702849, 014705151, 014705298, 014717973, 014773915, 014776169, 014830313, 014830321, 014839880, 014844886, 014850816, 014850896, 014851133, 014851157, 014852153, 014852199, 014852210, 014852236, 014852309, 014853293, 014853316, 014929757, 014933747, 014934451, 014935889, 014979033, 014979067, 015013082, 015013212, 015068863, 015069670, 015069673, 015069937, 015073134, 015139606, 015163749, 015345814, 015345823, 015367164, 015367174, 015367191, 015416790, 015417287, 015421160, 015457028, 015777503, 015777724, 015777741, 015777750, 016032837, 016329457, 016329468, 016545851, 016936047, 016937822, 016962178, 017237127
FSC: 5310 — Nuts and Washers
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialPLASTIC POLYCHLOROTRIFLUOROETHYLENE OVERALL
seal_width0.045 INCHES NOMINAL IN
constructionONE-PIECE
housing_bore_diameter0.562 INCHES NOMINAL IN
end_item_identificationVALVE, BALL
accommodated_shaft_diameter0.437 INCHES NOMINAL IN
NSN5310-00-031-0920
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5001003 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
WIDTH ACROSS FLATS: 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN
•
BEARING SURFACE FINISH: 125.0 MICROINCHES
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
TEMP RATING: 250.0 FAHRENHEIT NOMINAL DEGF
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM D44066,COMP A,TYPE 1 ASSN STD SINGLE MATERIAL RESPONSE LOCKING INSERT
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN
BEARING SURFACE FINISH125.0 MICROINCHES
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
TEMP RATING250.0 FAHRENHEIT NOMINAL DEGF
MATERIAL DOCUMENT AND CLASSIFICATIONASTM D44066,COMP A,TYPE 1 ASSN STD SINGLE MATERIAL RESPONSE LOCKING INSERT
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.250 INCHES IN
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
NUT HEIGHT0.240 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
COUNTERSINK ANGLE88.0 DEGREES NOMINAL NUT
SUBSTITUTES & CROSS-REFERENCES 10
751-6402608 FIND 19Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
M17828-4CReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
751-6402602-20Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
563-6405731-37Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
721-7068583-65Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
751-6402604 FIND 20Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5001003?
5001003 is a ADAPTER,STRAIGHT,FLANGE TO PIPE.
What parts can replace 5001003?
There are 10 known substitutes for 5001003: 751-6402608 FIND 19, M17828-4C, 751-6402602-20 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5001003?
5001003 is cataloged in the U.S. Government catalog under NSN 5310-00-031-0920. This indicates validated use in U.S. government and defense supply chains.
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✓ 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.