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H821-0502-17 — KEY,MACHINE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

H821-0502-17: KEY,MACHINE.

The KEY,MACHINE is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5315-01-720-9759, 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
H821-0502-17
NSN: 5315-01-720-9759
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
Part NumberH821-0502-17
NSN5315-01-720-9759
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: H821-0502-17 · 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
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 2
7072545Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
751-7072502-17Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is H821-0502-17?
H821-0502-17 is a KEY,MACHINE.
What parts can replace H821-0502-17?
There are 2 known substitutes for H821-0502-17: 7072545, 751-7072502-17. Substitute compatibility should be verified for your specific system.
What is the NSN for H821-0502-17?
H821-0502-17 is cataloged in the U.S. Government catalog under NSN 5315-01-720-9759. This indicates validated use in U.S. government and defense supply chains.
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