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Technical Data Sheet
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21769 — PUMP,HYDRAULIC

✓ Government record, cited
Esselte · NUT WASHER
PRODUCT OVERVIEW

21769: PUMP,HYDRAULIC.

Slide binding is the solution when presentation is required at a budget price. - Instant presentation. - Low cost solution – ideal for students and schools.

- Binds looseleaf pages into book form. - Easy paper insertion. - No need to punch paper.

- Covers available. - Multipunched slide available for filing in binders. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-221-4876, 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
21769
NSN: 5310-00-221-4876
NIINs: 002214876, 004530491, 015073876
FSC: 5310 — Nuts and Washers
CAGE: 77820 — AMPHENOL CORP DIV AMPHENOL AEROSPACE OPERATIONS (USA)
SPECIFICATIONS
end_item_identificationF/A-22 RAPTOR
NSN5310-00-221-4876
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 21769 · Esselte ⚠ 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: 0.500 INCHES NOMINAL IN
•
THREAD SERIES: UNEF
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
NUT HEIGHT: 0.094 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM OR NICKEL OVERALL
•
NUT STYLE: HEXAGON
•
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.500 INCHES NOMINAL IN
THREAD SERIESUNEF
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.375 INCHES IN
NUT HEIGHT0.094 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OR NICKEL OVERALL
NUT STYLEHEXAGON
THREAD CLASS2B
THREAD QUANTITY PER INCH32
MATERIALCOPPER ALLOY OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
45T1Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21769?
21769 is a PUMP,HYDRAULIC manufactured by Esselte.
What parts can replace 21769?
There is 1 known substitute for 21769: 45T1. Substitute compatibility should be verified for your specific system.
What is the NSN for 21769?
21769 is cataloged in the U.S. Government catalog under NSN 5310-00-221-4876. 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.