PartsTable
Technical Data Sheet
16990-3F-7C ✓ 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,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4037 OR STEEL COMP 8740 OVERALL, head_style: FLAT COUNTERSUNK, thread_class: 3A A, head_diameter: 0.359 INCHES MINIMUM AND 0.411 INCHES MAXIMUM IN, thread_length: 0.301 INCHES MINIMUM AND 0.321 INCHES MAXIMUM IN, fastener_length: 0.428 INCHES MINIMUM AND 0.448 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 5305-00-900-1829, 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
16990-3F-7C
NSN: 5305-00-900-1829
FSC: 5305
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)
SPECIFICATIONS
materialSTEEL COMP 4037 OR STEEL COMP 8740 OVERALL
head_styleFLAT COUNTERSUNK
thread_class3A A
head_diameter0.359 INCHES MINIMUM AND 0.411 INCHES MAXIMUM IN
thread_length0.301 INCHES MINIMUM AND 0.321 INCHES MAXIMUM IN
fastener_length0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
hardness_rating36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
countersink_angle82.0 DEGREES NOMINAL
surface_treatmentCADMIUM OVERALL
width_across_flats0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN
internal_drive_styleHEXAGON
NSN5305-00-900-1829
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 16990-3F-7C · 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 QUANTITY PER INCH: 32
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
SURFACE TREATMENT: CADMIUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING: 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
THREAD LENGTH: 0.301 INCHES MINIMUM AND 0.321 INCHES MAXIMUM IN
THREAD CLASS: 3A A
COUNTERSINK ANGLE: 82.0 DEGREES NOMINAL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH32
NOMINAL THREAD DIAMETER0.190 INCHES IN
SURFACE TREATMENTCADMIUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
THREAD LENGTH0.301 INCHES MINIMUM AND 0.321 INCHES MAXIMUM IN
THREAD CLASS3A A
COUNTERSINK ANGLE82.0 DEGREES NOMINAL
FASTENER LENGTH0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
CH211A W/167760SPInterchangeable
interchangeable cross-reference
interchangeable
LF516-38BInterchangeable
interchangeable cross-reference
interchangeable
CH211A /W 167760Interchangeable
interchangeable cross-reference
interchangeable
NASM24671-78Interchangeable
interchangeable cross-reference
interchangeable
MS24671-78Interchangeable
interchangeable cross-reference
interchangeable
FF-S-86 TYPE IVInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 16990-3F-7C?
16990-3F-7C is a SCREW,CAP,SOCKET HEAD.
What parts can replace 16990-3F-7C?
There are 19 known substitutes for 16990-3F-7C: CH211A W/167760SP, LF516-38B, CH211A /W 167760 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 16990-3F-7C?
16990-3F-7C is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-900-1829. This indicates validated use in U.S. government and defense supply chains.
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