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Technical Data Sheet
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98FS5-16 — 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 STUD,TURNLOCK FASTENER is a the manufacturer industrial component. Key specifications include diameter: 0.557 INCHES MINIMUM AND 0.567 INCHES MAXIMUM IN, material: STEEL OVERALL, drive_type: SLOTTED, grip_length: 0.398 INCHES NOMINAL IN, surface_treatment: CADMIUM OVERALL, turnlock_stud_head_style: FLAT COUNTERSUNK. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-432-9854, 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
98FS5-16
NSN: 5325-00-432-9854
FSC: 5325
CAGE: 78189 — ITW SHAKEPROOF AUTOMOTIVE PRODUCTS (USA)
SPECIFICATIONS
diameter0.557 INCHES MINIMUM AND 0.567 INCHES MAXIMUM IN
materialSTEEL OVERALL
drive_typeSLOTTED
grip_length0.398 INCHES NOMINAL IN
surface_treatmentCADMIUM OVERALL
turnlock_stud_head_styleFLAT COUNTERSUNK
stud_shank_major_diameter0.255 INCHES NOMINAL IN
turnlock_stud_shank_styleSTUD SHANK
nondefinitive_spec/std_data1 TYPE AND 1 STYLE AND B CLASS AND 5 SIZE
material_accommodated_thickness0.151 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN
NSN5325-00-432-9854
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 98FS5-16 · 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
•
DRIVE TYPE: SLOTTED
•
TURNLOCK STUD SHANK STYLE: STUD SHANK
•
STUD SHANK MAJOR DIAMETER: 0.255 INCHES NOMINAL IN
•
GRIP LENGTH: 0.398 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM OVERALL
•
NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND 1 STYLE AND B CLASS AND 5 SIZE
•
TURNLOCK STUD HEAD STYLE: FLAT COUNTERSUNK
•
MATERIAL ACCOMMODATED THICKNESS: 0.151 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
DRIVE TYPESLOTTED
TURNLOCK STUD SHANK STYLESTUD SHANK
STUD SHANK MAJOR DIAMETER0.255 INCHES NOMINAL IN
GRIP LENGTH0.398 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OVERALL
NONDEFINITIVE SPEC/STD DATA1 TYPE AND 1 STYLE AND B CLASS AND 5 SIZE
TURNLOCK STUD HEAD STYLEFLAT COUNTERSUNK
MATERIAL ACCOMMODATED THICKNESS0.151 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
DIAMETER0.557 INCHES MINIMUM AND 0.567 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 1
MILF5591Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 98FS5-16?
98FS5-16 is a STUD,TURNLOCK FASTENER.
What parts can replace 98FS5-16?
There is 1 known substitute for 98FS5-16: MILF5591. Substitute compatibility should be verified for your specific system.
What is the NSN for 98FS5-16?
98FS5-16 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-432-9854. 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: September 2026