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A51B24690-11 — BOLT,INTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

A51B24690-11: BOLT,INTERNALLY RELIEVED BODY.

The BOLT,INTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: ROUND W/WRENCH FLATS, head_height: 0.140 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.835 INCHES NOMINAL IN, thread_length: 0.480 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-003-9026, 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
A51B24690-11
NSN: 5306-00-003-9026
FSC: 5306 — Bolts
CAGE: 79RG9 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleROUND W/WRENCH FLATS
head_height0.140 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.835 INCHES NOMINAL IN
thread_length0.480 INCHES MAXIMUM IN
fastener_length1.648 INCHES NOMINAL IN
hardness_rating46.0 ROCKWELL C MINIMUM AND 49.0 ROCKWELL C MAXIMUM OVERALL
shoulder_length1.168 INCHES NOMINAL IN
style_designatorCONCENTRIC HOLE UNTHREADED
thread_directionRIGHT-HAND
shoulder_diameter0.4925 INCHES MINIMUM AND 0.4936 INCHES MAXIMUM IN
NSN5306-00-003-9026
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: A51B24690-11 · 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: 0.140 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.648 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-S-8837 TY 2 CL1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
CONCENTRIC HOLE DEPTH: 0.838 INCHES MINIMUM AND 0.848 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.480 INCHES MAXIMUM IN
•
HARDNESS RATING: 46.0 ROCKWELL C MINIMUM AND 49.0 ROCKWELL C MAXIMUM OVERALL
•
SHANK UNTHREADED HOLE DIAMETER: 0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE IN
•
STYLE DESIGNATOR: CONCENTRIC HOLE UNTHREADED
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.140 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
FASTENER LENGTH1.648 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-S-8837 TY 2 CL1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
CONCENTRIC HOLE DEPTH0.838 INCHES MINIMUM AND 0.848 INCHES MAXIMUM IN
THREAD LENGTH0.480 INCHES MAXIMUM IN
HARDNESS RATING46.0 ROCKWELL C MINIMUM AND 49.0 ROCKWELL C MAXIMUM OVERALL
SHANK UNTHREADED HOLE DIAMETER0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE IN
STYLE DESIGNATORCONCENTRIC HOLE UNTHREADED
MATERIAL DOCUMENT AND CLASSIFICATIONG-1010 COMP 4330V FSCM 26512 MFR REF SINGLE MATERIAL RESPONSE OVERALL V
NOMINAL THREAD DIAMETER0.375 INCHES IN
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-004-7044 5306-00-007-6129 5306-00-008-7899 5306-00-009-4739 5306-00-118-7332 5306-00-151-1777 5306-00-255-4507 5306-01-101-2459
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 A51B24690-11?
A51B24690-11 is a BOLT,INTERNALLY RELIEVED BODY.
What is the NSN for A51B24690-11?
A51B24690-11 is cataloged in the U.S. Government catalog under NSN 5306-00-003-9026. 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.