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GB510CS4HD10 — SCREW,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

GB510CS4HD10: SCREW,CLOSE TOLERANCE.

The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: STEEL COMP H11 OVERALL, head_style: FLAT COUNTERSUNK, grip_length: 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.2483 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM IN, head_diameter: 0.447 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-133-3879, 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
GB510CS4HD10
NSN: 5305-01-133-3879
FSC: 5305 — Screws
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP H11 OVERALL
head_styleFLAT COUNTERSUNK
grip_length0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.2483 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM IN
head_diameter0.447 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN
thread_length0.351 INCHES MINIMUM AND 0.418 INCHES MAXIMUM IN
fastener_length0.986 INCHES MINIMUM AND 1.033 INCHES MAXIMUM IN
hardness_rating51.0 ROCKWELL C MINIMUM AND 54.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
countersink_angle99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
surface_treatmentCADMIUM AND CHROMATE OVERALL
NSN5305-01-133-3879
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: GB510CS4HD10 · 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
•
FASTENER LENGTH: 0.986 INCHES MINIMUM AND 1.033 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-8837 TYPE 2 CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.351 INCHES MINIMUM AND 0.418 INCHES MAXIMUM IN
•
HARDNESS RATING: 51.0 ROCKWELL C MINIMUM AND 54.0 ROCKWELL C MAXIMUM OVERALL
•
SHANK UNTHREADED HOLE DIAMETER: 0.071 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
HEAD STYLE: FLAT COUNTERSUNK
TECHNICAL CHARACTERISTICS
FASTENER LENGTH0.986 INCHES MINIMUM AND 1.033 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-8837 TYPE 2 CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.351 INCHES MINIMUM AND 0.418 INCHES MAXIMUM IN
HARDNESS RATING51.0 ROCKWELL C MINIMUM AND 54.0 ROCKWELL C MAXIMUM OVERALL
SHANK UNTHREADED HOLE DIAMETER0.071 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEFLAT COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES 2
GB510DE410DSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
79901HD-4-10Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 GB510CS4HD10?
GB510CS4HD10 is a SCREW,CLOSE TOLERANCE.
What parts can replace GB510CS4HD10?
There are 2 known substitutes for GB510CS4HD10: GB510DE410D, 79901HD-4-10. Substitute compatibility should be verified for your specific system.
What is the NSN for GB510CS4HD10?
GB510CS4HD10 is cataloged in the U.S. Government catalog under NSN 5305-01-133-3879. 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.