NSN 5305-00-527-4520 NIIN — Close Tolerance Screw

National Stock number : 5305-00-527-4520

Close Tolerance Screw


Available Quantity 29,595
Available Conditions NE NS OH SV
Classification Screws - FSC 5305
Schedule B 7318152000
Stock Check Date 10/06/2025
Part-Number.info Quality System
  •   ISO 9001:2015 + AS9120B Certifed
  •   Audited supply chain
  •   Counterfeit Parts Prevention
  •   100% Product Inspections
  •   7 Year Record Retention
  •   HAZMAT Certified
  •   ITAR and DDTC Registered
AS9120 Certified Supplier

Product Properties


Description

Close Tolerance Screw

Thread Class

3a

Thread Direction

RIGHT-Hand

Thread Length

0.398in. ⁓13/32"

Fastener Length

0.891in. and 0.938in. ⁓61/64"

Head Style

flat countersunk

Head Diameter

0.497in. and 0.507in.

Grip Diameter

0.2483in. and 0.2492in.

Internal Drive Style

cross recess type 1

Nominal Thread Diameter

0.250in. ⁓1/4"

Grip Length

0.438in.

Thread Quantity Per Inch

28

Minimum Tensile Strength

160000 pounds per square inch

Hardness Rating

36.0 rockwell c grip and 40.0 rockwell c grip

Countersink Angle

100.0 degrees

Surface Finish

32.0 microinches top of head

Material

steel comp 4140 or steel comp E4340 or steel comp 6150 or steel comp 8735 or steel comp 8740

Material Document And Classification

MIL-S-5626 mil spec 1st material response or MIL-S-5000 mil spec 2nd material response or MIL-S-8503 mil spec 3rd material response or MIL-S-6098 mil spec 4th material response or MIL-S-6049 mil spec 5th material response

Surface Treatment

cadmium grip and chromate grip

Surface Treatment Document And Classification

QQ-P-416, ty 2, cl 3 fed spec single treatment response grip

Thread Series Designator

unf

Specification/standard Data

80205-NAS334 professional/industrial association standard

Pricing and Availability Quote

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National Stock Number
5305-00-527-4520
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