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DD624 — Technical Data Sheet

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— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: STEEL COMP 302 OVERALL, hole_diameter: 0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN, overall_height: 0.038 INCHES NOMINAL IN, outside_diameter: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN, style_designator: SPRING TENSION, material_thickness: 0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5310-00-823-5025, 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
DD624
NSN: 5310-00-823-5025
FSC: 5310
CAGE: 29964 — ALLIED DEVICES CORP DBA ABSOLUTE PRECISION CO (USA)
SPECIFICATIONS
materialSTEEL COMP 302 OVERALL
hole_diameter0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
overall_height0.038 INCHES NOMINAL IN
outside_diameter0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
style_designatorSPRING TENSION
material_thickness0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN
NSN5310-00-823-5025
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: DD624 · 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
•
MATERIAL: STEEL COMP 302 OVERALL
•
MATERIAL THICKNESS: 0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SPRING TENSION
TECHNICAL CHARACTERISTICS
MATERIALSTEEL COMP 302 OVERALL
MATERIAL THICKNESS0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN
OVERALL HEIGHT0.038 INCHES NOMINAL IN
HOLE DIAMETER0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
STYLE DESIGNATORSPRING TENSION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
427746-5InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
WH5InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
ST5InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
20994LHInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
SWT1P1T3AInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
8519166InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is DD624?
DD624 is a WASHER,SPRING TENSION.
What parts can replace DD624?
There are 22 known substitutes for DD624: 427746-5, WH5, ST5 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for DD624?
DD624 is cataloged in the Federal Logistics Information System under NSN 5310-00-823-5025. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026