PartsTable
Technical Data Sheet
MS16992-566 ✓ 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,LAG is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.272 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN, shoulder_shape: ROUND FIRST SHOULDER, fastener_length: 4.000 INCHES NOMINAL IN, hardness_rating: 60.0 ROCKWELL B MINIMUM OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-406-5199, 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
MS16992-566
NSN: 5305-00-406-5199
FSC: 5305
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.272 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length4.000 INCHES NOMINAL IN
hardness_rating60.0 ROCKWELL B MINIMUM OVERALL
shoulder_length0.156 INCHES MINIMUM FIRST SHOULDER IN
shoulder_diameter0.421 INCHES MINIMUM AND 0.452 INCHES MAXIMUM FIRST SHOULDER IN
surface_treatmentZINC OVERALL
width_between_flats0.603 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
nonmachine_thread_styleGIMLET POINT (TYPE A, AB OR BA)
minimum_tensile_strength55000 POUNDS PER SQUARE INCH LBS
NSN5305-00-406-5199
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS16992-566 · 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
MATERIAL: STEEL OVERALL
HEAD HEIGHT: 0.272 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN
NONMACHINE NOMINAL THREAD DIAMETER: 0.437 INCHES IN
FASTENER LENGTH: 4.000 INCHES NOMINAL IN
NONMACHINE THREAD STYLE: GIMLET POINT (TYPE A, AB OR BA)
MINIMUM TENSILE STRENGTH: 55000 POUNDS PER SQUARE INCH LBS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM A153-60 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SHOULDER LENGTH: 0.156 INCHES MINIMUM FIRST SHOULDER IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
HEAD HEIGHT0.272 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN
NONMACHINE NOMINAL THREAD DIAMETER0.437 INCHES IN
FASTENER LENGTH4.000 INCHES NOMINAL IN
NONMACHINE THREAD STYLEGIMLET POINT (TYPE A, AB OR BA)
MINIMUM TENSILE STRENGTH55000 POUNDS PER SQUARE INCH LBS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM A153-60 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SHOULDER LENGTH0.156 INCHES MINIMUM FIRST SHOULDER IN
MATERIAL DOCUMENT AND CLASSIFICATIONFF-B-561,GRADE B FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NONDEFINITIVE SPEC/STD DATA1 TYPE AND 1 STYLE AND B GRADE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
FFB561Interchangeable
interchangeable cross-reference
interchangeable
MS16992-606Interchangeable
interchangeable cross-reference
interchangeable
FF-B-561DInterchangeable
interchangeable cross-reference
interchangeable
FFB561TYPEVGRADECInterchangeable
interchangeable cross-reference
interchangeable
5371Interchangeable
interchangeable cross-reference
interchangeable
MS16992-610Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS16992-566?
MS16992-566 is a SCREW,LAG.
What parts can replace MS16992-566?
There are 6 known substitutes for MS16992-566: FFB561, MS16992-606, FF-B-561D and 3 more. Substitute compatibility should be verified for your specific system.
Is MS16992-566 still available?
MS16992-566 is currently cancelled.
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