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2531825 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

2531825: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: SQUARE, head_height: 0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN, thread_length: 2.360 INCHES MINIMUM AND 2.390 INCHES MAXIMUM IN, screw_material: STEEL COMP 4130, fastener_length: 2.985 INCHES MINIMUM AND 3.015 INCHES MAXIMUM IN, special_features: THRU HOLE LOCATED CENTER ON SIDE OF HEAD, DIAMETER TO BE 0.375 TO 0.377 INCHES. IN.

This part is cataloged in the U.S. Government catalog under NSN 5305-01-596-5869, 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
2531825
NSN: 5305-01-596-5869
FSC: 5305 — Screws
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
head_styleSQUARE
head_height0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN
thread_length2.360 INCHES MINIMUM AND 2.390 INCHES MAXIMUM IN
screw_materialSTEEL COMP 4130
fastener_length2.985 INCHES MINIMUM AND 3.015 INCHES MAXIMUM IN
special_featuresTHRU HOLE LOCATED CENTER ON SIDE OF HEAD, DIAMETER TO BE 0.375 TO 0.377 INCHES. IN
thread_directionRIGHT-HAND
width_between_flats0.470 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
internal_drive_styleW/O INTERNAL DRIVE
end_item_identificationSTAND, GUN MOUNT 1020-00-103-4677
nominal_thread_diameter0.25 INCHES IN
thread_quantity_per_inch28
NSN5305-01-596-5869
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 2531825 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
HEAD HEIGHT: 0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN
•
FASTENER LENGTH: 2.985 INCHES MINIMUM AND 3.015 INCHES MAXIMUM IN
•
THREAD LENGTH: 2.360 INCHES MINIMUM AND 2.390 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.25 INCHES IN
•
HEAD STYLE: SQUARE
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH BETWEEN FLATS: 0.470 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
•
SCREW MATERIAL: STEEL COMP 4130
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN
FASTENER LENGTH2.985 INCHES MINIMUM AND 3.015 INCHES MAXIMUM IN
THREAD LENGTH2.360 INCHES MINIMUM AND 2.390 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.25 INCHES IN
HEAD STYLESQUARE
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.470 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
SCREW MATERIALSTEEL COMP 4130
SPECIAL FEATURESTHRU HOLE LOCATED CENTER ON SIDE OF HEAD, DIAMETER TO BE 0.375 TO 0.377 INCHES. IN
INTERNAL DRIVE STYLEW/O INTERNAL DRIVE
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2531825?
2531825 is a SCREW,MACHINE.
What is the NSN for 2531825?
2531825 is cataloged in the U.S. Government catalog under NSN 5305-01-596-5869. 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.