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SP8821 — SPRING,HELICAL,COMPRESSION

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

SP8821: SPRING,HELICAL,COMPRESSION.

The SPRING,HELICAL,COMPRESSION is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, end_style: SPRING END,SQUARED AND GROUND BOTH ENDS, inside_diameter: 0.676 INCHES MINIMUM AND 0.686 INCHES MAXIMUM IN, style_designator: CYLINDRICAL, surface_treatment: CADMIUM AND CHROMATE OVERALL, spring_free_length: 2.419 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-130-5002, 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
SP8821
NSN: 5310-00-130-5002
NIINs: 001305002, 007856340
FSC: 5310 — Nuts and Washers
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL OVERALL
end_styleSPRING END,SQUARED AND GROUND BOTH ENDS
coil_quantity9
inside_diameter0.676 INCHES MINIMUM AND 0.686 INCHES MAXIMUM IN
style_designatorCYLINDRICAL
surface_treatmentCADMIUM AND CHROMATE OVERALL
spring_free_length2.419 INCHES NOMINAL IN
coil_helix_directionLEFT-HAND
spring_free_outside_diameter0.983 INCHES NOMINAL IN
spring_solid_outside_diameter0.983 INCHES NOMINAL IN
NSN5310-00-130-5002
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SP8821 · 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: 1.625 INCHES NOMINAL IN
•
THREAD SERIES: UNEF
•
THREAD DIRECTION: RIGHT-HAND
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NOMINAL THREAD SIZE: 0.750 INCHES IN
•
NUT HEIGHT: 2.500 INCHES NOMINAL IN
•
NUT STYLE: SLOTTED, HEXAGON
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THREAD CLASS: 2B
•
THREAD QUANTITY PER INCH: 20
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS1.625 INCHES NOMINAL IN
THREAD SERIESUNEF
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.750 INCHES IN
NUT HEIGHT2.500 INCHES NOMINAL IN
NUT STYLESLOTTED, HEXAGON
THREAD CLASS2B
THREAD QUANTITY PER INCH20
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 SP8821?
SP8821 is a SPRING,HELICAL,COMPRESSION.
What is the NSN for SP8821?
SP8821 is cataloged in the U.S. Government catalog under NSN 5310-00-130-5002. 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.