Part identity

16990-4F8D

Screw Cap Socket He

Section De Codification

Avg quote: 14 minFulfilled from Anaheim, CAAS9120:2025 · ISO 9001 · FAA AC 00-56BC of C, lot & date code with every line

Part description

Screw Cap Socket He

ASAP supports this specific part for replacement, spare-pool replenishment, retrofit, and urgent maintenance requirements. Quote requests can include alternate MPN, condition preferences, certification needs, and plant-specific receiving instructions so procurement gets a clear sourcing response before purchase.

Specifications

MPN
16990-4F8D
Item name
Screw Cap Socket He
Manufacturer code
F5385
Manufacturer
Section De Codification

Certifications & documentation

  • UL Recognized
  • CE
  • C of C available on request
SD

Manufacturer

Section De Codification

Authorized-distributor or qualified-aftermarket source. Parts shipped from this manufacturer include full traceability paperwork and counterfeit-mitigation per SAE AS6081.

View manufacturer profile →

NSN Information for Part Number 16990-4F8D with NSN 5305-00-543-6054, 5305005436054

NSNFSCNIINCLSHazmatDEMILCancelled NSN
5305005436054

Item Description:

Screw Cap Socket He

53050054360540N
CIICHCCESDPMICCriticalityENAC
U A
Part NumberISCRNVCRNCCHCCMSDSSADC
16990-4f8d225

Characteristics Data of NSN 5305-00-543-6054, 5305005436054

MRCCriteriaCharacteristic
AAJDTHREAD CLASS3A
AAJFTHREAD DIRECTIONRIGHT-HAND
AASATHREAD LENGTH0.335 INCHES MINIMUM AND 0.341 INCHES MAXIMUM
AASBFASTENER LENGTH0.398 INCHES MINIMUM AND 0.404 INCHES MAXIMUM
AASKHEAD STYLEFLAT COUNTERSUNK
AASLHEAD DIAMETER0.480 INCHES MINIMUM AND 0.531 INCHES MAXIMUM
ABQZINTERNAL DRIVE STYLEHEXAGON
AHYMNOMINAL THREAD DIAMETER0.250 INCHES
ASDBWIDTH ACROSS FLATS0.156 INCHES NOMINAL
CMLPTHREAD QUANTITY PER INCH28
CQFMHARDNESS RATING36.0 ROCKWELL C MINIMUM OVERALL AND 45.0 ROCKWELL C MAXIMUM OVERALL
CRSQCOUNTERSINK ANGLE80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
MATTMATERIALSTEEL OVERALL
SFTTSURFACE TREATMENTCADMIUM OVERALL
THSDTHREAD SERIES DESIGNATORUNF
Integrated Electromechanicals

Industrial automation, control, and electromechanical components. Over 2 billion parts across 5,100+ manufacturers. Quotes back in 15 minutes, 24/7 — fulfilled from Anaheim, California.

Certifications

  • AS9120:2025
  • ISO 9001:2015
  • FAA AC 00-56B
Share feedback

Proud supporter of the Intrepid Fallen Heroes Fund, advancing mental-health treatment and research for U.S. service members and veterans.

USA fulfillment. Every order shipped from our Anaheim, California operations. Counterfeit-mitigation aligned to SAE AS5553 / AS6081.

Official logos
  • NBA
  • ASA
  • AS9120:2025
Payment acceptedVisaMastercardDiscoverAmerican Express

© 2026 Integrated Electromechanicals. All rights reserved.

Owned and operated as a wholly-owned subsidiary of ASAP Semiconductor LLC. Export-controlled items handled in accordance with ITAR and EAR regulations.