PartsTable
Technical Data Sheet
PartsTable / MRO / 381
381 ✓ Verified by PartsTable
Displex · MRO · MRO_GENERAL
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

<b>Award-winning invisible display protection"Made in Germany"</b><br>The custom-fit premium protective films DISPLEX PROTECTOR Ultra-Clear ensure the best protection against scratches, optimum transparency and the highest colour fidelity.<br><br><b>Display protection as it should be: Invisible and effective!</b><br>- 100% custom-fit protective films through precision laser-cut<br>- Easy and fast application without bubbles by Easy-On® application aid<br>- Extremely scratch-resistant high-tech material<br>- Best transparency thanks to Ultra HD quality<br>- Optimal touch and scroll features<br>- Removed without residue and quickly<br>- 10-year guarantee<br>- Made in Germany<br><br><b>The premium screen guards DISPLEX PROTECTOR Ultra-Clear are of course available for smartphones, mini tablet-PC and tablet-PC.</b><br>Are protection films really the same? Far from it. With high-tech precision laser technology and outstanding film quality, DISPLEX offers made-to-measure display protection o This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-021-5912, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
MRO→ MRO_GENERAL→ 381
NSN: 5305-00-021-5912
FSC: 5305
CAGE: 26536 — DRESSER INDUSTRIES INC P AND M MFG DIV (USA)
SPECIFICATIONS
colorWHITE
phaseSINGLE
width3.70 MILLIMETERS NOMINAL MM
length7.50 CENTIMETERS NOMINAL CM
materialSTEEL OVERALL
base_typeSWIVEL
base_styleMIDGET FLANGED
body_styleCYLINDRICAL BUSHING MOUNTED
bulb_styleT (TUBULAR)
head_styleHEXAGON
leg_length1.500 INCHES NOMINAL ALL ENDS IN
accumulatorINCLUDED
NSN5305-00-021-5912
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 381 · Displex ⚠ 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: 0.750 INCHES MINIMUM IN
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 1 STYLE AND 2 GRADE
•
MATERIAL: STEEL OVERALL
•
THREAD SERIES DESIGNATOR: UNF
•
SURFACE FINISH: 63.0 MICROINCHES THREADS
•
HARDNESS RATING: 23.0 ROCKWELL B MINIMUM AND 80.0 ROCKWELL B MAXIMUM OVERALL
•
DEPARTURE FROM CITED DESIGNATOR: AS MODIFIED BY HEAD HEIGHT
TECHNICAL CHARACTERISTICS (FLIS)
THREAD LENGTH0.750 INCHES MINIMUM IN
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 1 STYLE AND 2 GRADE
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORUNF
SURFACE FINISH63.0 MICROINCHES THREADS
HARDNESS RATING23.0 ROCKWELL B MINIMUM AND 80.0 ROCKWELL B MAXIMUM OVERALL
DEPARTURE FROM CITED DESIGNATORAS MODIFIED BY HEAD HEIGHT
SURFACE FINISH125.0 MICROINCHES BEARING SURFACE OF HEAD
MATERIAL DOCUMENT AND CLASSIFICATIONSAE GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MINIMUM TENSILE STRENGTH74000 POUNDS PER SQUARE INCH LBS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
92134Interchangeable
interchangeable cross-reference
interchangeable
3825 PART 15Interchangeable
interchangeable cross-reference
interchangeable
RA3-8Interchangeable
interchangeable cross-reference
interchangeable
3998Interchangeable
interchangeable cross-reference
interchangeable
912789Interchangeable
interchangeable cross-reference
interchangeable
589498-4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 381?
381 is a RESISTOR,VARIABLE,NONWIRE WOUND, manufactured by Displex. It is classified as a MRO (MRO_GENERAL).
What parts can replace 381?
There are 25 known substitutes for 381: 92134, 3825 PART 15, RA3-8 and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 381?
381 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-021-5912. 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