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221903 — PIN,COUPLER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

221903: PIN,COUPLER.

The PIN,COUPLER is a the manufacturer industrial component. Key specifications include end_item_identification: 2330-01-537-8217 - SEMITRAILER, TANK, 5000 GALLON FUEL DISPENSING, UNDER/OVERWING. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-547-7300, 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
221903
NSN: 5315-01-547-7300
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 0DT23 — EATON CORPORATION DBA EATON INOAC (USA)
SPECIFICATIONS
end_item_identification2330-01-537-8217 - SEMITRAILER, TANK, 5000 GALLON FUEL DISPENSING, UNDER/OVERWING
NSN5315-01-547-7300
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 221903 · 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
TECHNICAL CHARACTERISTICS
END ITEM IDENTIFICATION2330-01-537-8217 - SEMITRAILER, TANK, 5000 GALLON FUEL DISPENSING, UNDER/OVERWING
OTHER ITEMS IN FSC 5315 — Nails, Machine Keys, and Pins
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5315-00-000-1037 5315-00-000-1067 5315-00-000-1245 5315-00-000-1372 5315-00-000-1412 5315-00-001-1571 5315-00-001-1572 5315-00-001-1602
SUBSTITUTES & CROSS-REFERENCES 1
9595-0073Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 221903?
221903 is a PIN,COUPLER.
What parts can replace 221903?
There is 1 known substitute for 221903: 9595-0073. Substitute compatibility should be verified for your specific system.
What is the NSN for 221903?
221903 is cataloged in the U.S. Government catalog under NSN 5315-01-547-7300. 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.