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Technical Data Sheet
PartsTable / COMPONENT / MS16988 MOD 5/16D X 2.75 LG
MS16988 MOD 5/16D X 2.75 LG ✓ 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 MS16988 MOD 5/16D X 2.75 LG is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-088-1053, 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
MS16988 MOD 5/16D X 2.75 LG
NSN: 5305-00-088-1053
FSC: 5305
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
Part NumberMS16988 MOD 5/16D X 2.75 LG
NSN5305-00-088-1053
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS16988 MOD 5/16D X 2.75 LG · 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 LENGTH: 1.000 INCHES MINIMUM IN
•
HEAD DIAMETER: 0.437 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 24
•
MATERIAL: STEEL OVERALL
•
SURFACE TREATMENT: CADMIUM OVERALL
•
FASTENER LENGTH: 2.750 INCHES NOMINAL IN
•
HEAD STYLE: FLAT CHAMFER
•
WIDTH ACROSS FLATS: 0.218 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD LENGTH1.000 INCHES MINIMUM IN
HEAD DIAMETER0.437 INCHES NOMINAL IN
THREAD QUANTITY PER INCH24
MATERIALSTEEL OVERALL
SURFACE TREATMENTCADMIUM OVERALL
FASTENER LENGTH2.750 INCHES NOMINAL IN
HEAD STYLEFLAT CHAMFER
WIDTH ACROSS FLATS0.218 INCHES NOMINAL IN
HEAD HEIGHT0.312 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.312 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
81421Interchangeable
interchangeable cross-reference
interchangeable
RVP3S55Interchangeable
interchangeable cross-reference
interchangeable
FF-S-86EInterchangeable
Same NIIN cross-reference
interchangeable
553159Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS16988 MOD 5/16D X 2.75 LG?
MS16988 MOD 5/16D X 2.75 LG is a MS16988 MOD 5/16D X 2.75 LG.
What parts can replace MS16988 MOD 5/16D X 2.75 LG?
There are 4 known substitutes for MS16988 MOD 5/16D X 2.75 LG: 81421, RVP3S55, FF-S-86E and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS16988 MOD 5/16D X 2.75 LG?
MS16988 MOD 5/16D X 2.75 LG is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-088-1053. 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