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4322621 — TOGGLE ARM,DOG ASSEMBLY,HATCH

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

4322621: TOGGLE ARM,DOG ASSEMBLY,HATCH.

The TOGGLE ARM,DOG ASSEMBLY,HATCH is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, nut_style: HEXAGON, thickness: 0.109 INCHES NOMINAL IN, body_style: WEBBED, SOLID, bore_style: W/ KEYWAY BOTH ENDS, nut_height: 0.724 INCHES MINIMUM AND 0.776 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-251-0088, 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
4322621
NSN: 5310-00-251-0088
NIINs: 002510088, 013502904, 013926425, 014192413, 014457650, 014608165, 014706853, 014744140, 014756924, 014756935, 014757192, 014758911, 014758927, 014758933, 014758942, 014758970, 014758979, 014759167, 014759195, 014759285, 014759289, 014759310, 014759523, 014759535, 014759628, 014759632, 014761196, 014763005, 014764167, 014766569, 014767270, 014767330
FSC: 5310 — Nuts and Washers
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_styleHEXAGON
thickness0.109 INCHES NOMINAL IN
body_styleWEBBED, SOLID
bore_styleW/ KEYWAY BOTH ENDS
nut_height0.724 INCHES MINIMUM AND 0.776 INCHES MAXIMUM IN
tooth_formSTANDARD
bore_length3.3125 INCHES NOMINAL IN
thread_class2B
bore_diameter2.500 INCHES NOMINAL IN
hole_diameter1.031 INCHES NOMINAL IN
overall_width2.5000 INCHES NOMINAL IN
NSN5310-00-251-0088
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4322621 · 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: 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE,GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
NUT HEIGHT: 0.320 INCHES MINIMUM AND 0.337 INCHES MAXIMUM IN
•
NUT STYLE: HEXAGON
•
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
MATERIAL DOCUMENT AND CLASSIFICATIONSAE,GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.375 INCHES IN
NUT HEIGHT0.320 INCHES MINIMUM AND 0.337 INCHES MAXIMUM IN
NUT STYLEHEXAGON
THREAD CLASS2B
THREAD QUANTITY PER INCH16
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 8
124-4322621 PC 109Reference document
Same NSN cross-reference
Reference document — Secondary reference
122-6818601 PCReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
122-2557733 PC NO. 71Reference document
Same NSN cross-reference
Reference document — Secondary reference
2420529Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
M2027QReference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
122-2420529 PIECE 99Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4322621?
4322621 is a TOGGLE ARM,DOG ASSEMBLY,HATCH.
What parts can replace 4322621?
There are 8 known substitutes for 4322621: 124-4322621 PC 109, 122-6818601 PC, 122-2557733 PC NO. 71 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4322621?
4322621 is cataloged in the U.S. Government catalog under NSN 5310-00-251-0088. 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.