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Technical Data Sheet
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MS90726-128 — Technical Data Sheet

✓ 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 SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 1.250 INCHES MINIMUM AND 1.438 INCHES MAXIMUM IN, fastener_length: 5.406 INCHES MINIMUM AND 5.500 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System under NSN 5305-00-716-8156, 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
MS90726-128
NSN: 5305-00-716-8156
FSC: 5305
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN
thread_class2A A
thread_length1.250 INCHES MINIMUM AND 1.438 INCHES MAXIMUM IN
fastener_length5.406 INCHES MINIMUM AND 5.500 INCHES MAXIMUM IN
hardness_rating32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentZINC AND CHROMATE OVERALL
width_between_flats0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
nominal_thread_diameter0.500 INCHES IN
minimum_tensile_strength150000 POUNDS PER SQUARE INCH LBS
NSN5305-00-716-8156
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS90726-128 · 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 STYLE: HEXAGON
•
THREAD CLASS: 2A A
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
•
THREAD QUANTITY PER INCH: 20
•
HARDNESS RATING: 23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
•
MINIMUM YIELD STRENGTH: 85000 POUNDS PER SQUARE INCH LBS
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TY 2 CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
TECHNICAL CHARACTERISTICS
HEAD STYLEHEXAGON
THREAD CLASS2A A
NOMINAL THREAD DIAMETER0.500 INCHES IN
THREAD QUANTITY PER INCH20
HARDNESS RATING23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM YIELD STRENGTH85000 POUNDS PER SQUARE INCH LBS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY 2 CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
HEAD HEIGHT0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN
THREAD LENGTH1.250 INCHES MINIMUM AND 1.438 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
444655InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
WW-P-471ACBBCBInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
WWP471InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
0105-5330InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
403504InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
444776InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS90726-128?
MS90726-128 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace MS90726-128?
There are 12 known substitutes for MS90726-128: 444655, WW-P-471ACBBCB, WWP471 and 9 more. Substitute compatibility should be verified for your specific system.
Is MS90726-128 still available?
MS90726-128 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026