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Technical Data Sheet
PartsTable / COMPONENT / 407128
407128 ✓ 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 407128 is a the manufacturer industrial component. Key specifications include hole_diameter: 0.195 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN, hardness_rating: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM, outside_diameter: 0.395 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN, style_designator: FLAT EXTERNAL TEETH, surface_treatment: CADMIUM AND CHROMATE OVERALL, material_thickness: 0.020 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-022-4695, 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
407128
NSN: 5305-00-022-4695
FSC: 5305
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
materialSTEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1059 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OVERALL
hole_diameter0.195 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
hardness_rating40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
outside_diameter0.395 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN
style_designatorFLAT EXTERNAL TEETH
surface_treatmentCADMIUM AND CHROMATE OVERALL
material_thickness0.020 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
material_document_and_classification66 FED STD ALL MATERIAL RESPONSES OVERALL
surface_treatment_document_and_classificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5305-00-022-4695
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 407128 · 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: 0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
•
HEAD DIAMETER: 0.166 INCHES MINIMUM AND 0.183 INCHES MAXIMUM IN
•
SCREW MATERIAL: STEEL CORROSION RESISTING
•
THREAD CLASS: 2A A
•
NOMINAL THREAD DIAMETER: 0.112 INCHES IN
•
HEAD HEIGHT: 0.069 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
TECHNICAL CHARACTERISTICS (FLIS)
FASTENER LENGTH0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
HEAD DIAMETER0.166 INCHES MINIMUM AND 0.183 INCHES MAXIMUM IN
SCREW MATERIALSTEEL CORROSION RESISTING
THREAD CLASS2A A
NOMINAL THREAD DIAMETER0.112 INCHES IN
HEAD HEIGHT0.069 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH40
THREAD LENGTH0.262 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
MS35335-32Interchangeable
interchangeable cross-reference
interchangeable
656193Interchangeable
interchangeable cross-reference
interchangeable
138479Interchangeable
interchangeable cross-reference
interchangeable
224695Interchangeable
interchangeable cross-reference
interchangeable
47-113Interchangeable
interchangeable cross-reference
interchangeable
7J6545Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 407128?
407128 is a 407128.
What parts can replace 407128?
There are 10 known substitutes for 407128: MS35335-32, 656193, 138479 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 407128?
407128 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-022-4695. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026