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AN4H50 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

AN4H50: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 4037 OVERALL, hole_type: DRILLED, head_style: HEXAGON, grip_length: 4.547 INCHES MINIMUM AND 4.578 INCHES MAXIMUM IN, head_height: 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN, thread_class: 3A A. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-558-9454, 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
AN4H50
NSN: 5306-00-558-9454
FSC: 5306 — Bolts
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialSTEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 4037 OVERALL
hole_typeDRILLED
head_styleHEXAGON
grip_length4.547 INCHES MINIMUM AND 4.578 INCHES MAXIMUM IN
head_height0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
thread_class3A A
hole_diameter0.046 INCHES NOMINAL IN
hole_quantity1
thread_length0.438 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
fastener_length5.016 INCHES MINIMUM AND 5.062 INCHES MAXIMUM IN
hardness_rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
NSN5306-00-558-9454
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AN4H50 · 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 0.172 INCHES MAXIMUM IN
•
FASTENER LENGTH: 5.016 INCHES MINIMUM AND 5.062 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.438 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
•
HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
•
SHANK UNTHREADED HOLE DIAMETER: 0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE IN
•
HOLE CONFIGURATION STYLE: HEXAGON FLATS
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5626 FED SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 FED SPEC 2ND MATERIAL RESPONSE OR MIL-S-6050 FED SPEC 3RD MATERIAL RESPONSE OR AMS 6300 ASSN STD 4TH MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
FASTENER LENGTH5.016 INCHES MINIMUM AND 5.062 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.438 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
SHANK UNTHREADED HOLE DIAMETER0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE IN
HOLE CONFIGURATION STYLEHEXAGON FLATS
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5626 FED SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 FED SPEC 2ND MATERIAL RESPONSE OR MIL-S-6050 FED SPEC 3RD MATERIAL RESPONSE OR AMS 6300 ASSN STD 4TH MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES IN
FEATURES PROVIDEDFINISHED HEAD
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
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 AN4H50?
AN4H50 is a BOLT,MACHINE.
What is the NSN for AN4H50?
AN4H50 is cataloged in the U.S. Government catalog under NSN 5306-00-558-9454. 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.