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Technical Data Sheet
PartsTable / COMPONENT / MS20073-03-15
MS20073-03-15 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include hole_type: DRILLED, head_style: HEXAGON, grip_length: 1.109 INCHES MINIMUM AND 1.141 INCHES MAXIMUM IN, head_height: 0.172 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN, thread_class: 3A A, hole_diameter: 0.070 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-720-8748, 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
MS20073-03-15
NSN: 5306-00-720-8748
FSC: 5306
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL
hole_typeDRILLED
head_styleHEXAGON
grip_length1.109 INCHES MINIMUM AND 1.141 INCHES MAXIMUM IN
head_height0.172 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN
thread_class3A A
hole_diameter0.070 INCHES NOMINAL IN
hole_quantity6
thread_length0.499 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN
fastener_length1.640 INCHES MINIMUM AND 1.687 INCHES MAXIMUM IN
hardness_rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
NSN5306-00-720-8748
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS20073-03-15 · 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
•
THREAD CLASS: 3A A
•
MINIMUM TENSILE STRENGTH: 125000 POUNDS PER SQUARE INCH LBS
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TY 2 CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-65626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6050 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-6098 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 5TH MATERIAL RESPONSE OR AMS 6300 ASSN STD 6TH MATERIAL RESPONSE OVERALL
•
HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
•
THREAD SERIES DESIGNATOR: UNF
•
FEATURES PROVIDED: FINISHED HEAD
•
HOLE TYPE: DRILLED
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS3A A
MINIMUM TENSILE STRENGTH125000 POUNDS PER SQUARE INCH LBS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY 2 CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-65626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6050 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-6098 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 5TH MATERIAL RESPONSE OR AMS 6300 ASSN STD 6TH MATERIAL RESPONSE OVERALL
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
THREAD SERIES DESIGNATORUNF
FEATURES PROVIDEDFINISHED HEAD
HOLE TYPEDRILLED
GRIP LENGTH1.109 INCHES MINIMUM AND 1.141 INCHES MAXIMUM IN
HEAD STYLEHEXAGON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
MS20074-10-16Upgraded Successor
successor cross-reference
successor
MILB6812Upgraded Successor
successor cross-reference
successor
AN3-4Upgraded Successor
successor cross-reference
successor
85H30Upgraded Successor
successor cross-reference
successor
NASM6812Upgraded Successor
successor cross-reference
successor
83T26Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS20073-03-15?
MS20073-03-15 is a BOLT,MACHINE.
What parts can replace MS20073-03-15?
There are 13 known substitutes for MS20073-03-15: MS20074-10-16, MILB6812, AN3-4 and 10 more. Substitute compatibility should be verified for your specific system.
Is MS20073-03-15 still available?
MS20073-03-15 is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: July 2026