GOVERNMENT
SPECIFICATIONS
MS-20257 SPECIFICATION/SUPERSEDES AN-257
A) COMPLETE HINGES ARE
FURNISHED WITH A PIN OF THE SAME LENGTH.
B) SECOND DASH NUMBER INDICATES
LENGTH(L) EXPRESSED IN INCHES AND
HUNDREDTHS NOT EXCEEDING STOCK LENGTH OF
TABLE. END LOOPS AND /OR TANGS MUST
NEVER EXCEED A FULL LOOP OR TANG, AND
BOTH ENDS MUST MEET EQUAL WITHIN .020
INCH.
C) TOLERANCE SHALL BE + - .008 ON EACH
DIMENSION FOR F,2F,3F, ETC. AND SHALL
NOT BE CUMULATIVE.
D) TYPES X AND Y HALF HINGES CAN BE MADE
FROM TYPE H HALF HINGE BUT WILL NOT BE
STOCKED OR PROCURED BY SERVICE
ACTIVITIES.
E) HINGE PINS SHALL BE IN ACCORDANCE
WITH MS20253. USE CADMIUM PLATED
CORROSION RESISTANT STEEL PIN AND
ALUMINUM ALLOY HINGE. USE PASSIVATED
CORROSION RESISTANT STEEL PIN WITH
CORROSION RESISTANT STEEL HINGE.
MATERIAL
ALUMINUM ALLOY, 5052, H24 OR H34 PER
QQ-A-250/8. CORROSION RESISTANT STEEL
PER QQ-S-766, TYPE 301,302, OR 304.
FINISH
ALUMINUM ALLOY, ANODIZED,
MIL-A-8625T,TYPE II OR NONE DEPENDING ON
CODING. CORROSION RESISTANT STEEL, NONE.
REMOVE ALL BURRS AND SHARP EDGES.
DIMENSIONS IN INCHES, UNLESS OTHERWISE
SPECIFIED, TOLERANCES: DECIMALS + -
.010, ANGLES + - 1/2 DEGREES. ADD H, X,
OR Y BEFORE FIRST DASH NUMBER FOR HALF
HINGE WITHOUT PIN.
MS-20253 HINGE PINS FOR MS HINGES USED
WITH HINGES MS20257 AND MS20001
______________________________________________________________
DASH NUMBER F + .001 DIA
---------------------------------------------------------------------------------------------------
CADMUIM PLATED PASSIVATED
---------------------------------------------------------------------------------------------------
-P1 -1 .062
-P2 -2 .089
-P3 -3 .117
-P4 -4 .179
-P5 -5 .129
---------------------------------------------------------------------------------------------------
USE CADMIUM PLATED, CORROSION RESISTANT
STEEL WITH ALUMINUM ALLOY HINGE USE
PASSIVATED CORROSION RESISTANT STEEL PIN
WITH CORROSION RESISTANT STEEL HINGE
MS-3500 SERIES
GOVERNMENT STANDARDS / MILITARY
STANDARDS
NOTES
MATERIAL
A. ALUMINUM-LEAF-TEMPER H24 OR H34 HALF
HARD, PER QQ-A-250/8.
ALUMINUM-PIN--TEMPER, HALF HARD PER
QQ-A-225/7.
B. BRASS-LEAF-ALLOY 268, TEMPER HALF
HARD, PER QQ-B-613. COPPER-PIN-ALLOY
260, TEMPER HALF HARD PER QQ-W-321.
C. CORROSION RESISTING STEEL-LEAF CLASS
301,302,OR 304. CONDITION A TEMPER
ANNEALED, PER QQ-S-766. CORROSION
RESISTING STEEL-PIN-FORM 1, CONDITION
B,PER QQ-W-423.
D. CARBON STEEL-LEAF-COLD-ROLLED, TEMPER
NO. 4 PER QQ-S-698. CARBON STEEL-PIN
COMPOSITION 1010, 1020 PER QQ-N-461.
E. CARBON STEEL-LEAF-COLD-ROLLED, TEMPER
NO. 4 PER QQ-S-698. COPPER-PIN-ALLOY
260, TEMPER HALF HARD, PER QQ-W-321.
FINISH
MATERIALS A,B,C AND D SHALL BE PLAIN
(UNCOATED).
MATERIALS D WHEN SPECIFIED, SHALL BE
ZINC PLATED
TYPE II CLASS 2 OF QQ-Z-325 OR CADMIUM
PLATED
TYPE II CLASS 1 OF QQ-P-416.
MATERIALS E SHALL BE CADMIUM PLATED TYPE
II CLASS 1 OF QQ-P-416.
DIMENSIONS
ALL DIMENSIONS ARE IN INCHES UNLESS
OTHERWISE SPECIFIED.
PART NUMBER
THE MS PART NUMBER CONSISTS OF THE MS
NUMBER PLUS THE DASH NUMBER FOLLOWED BY
THE APPLICABLE LETTER FOR MATERIAL.
EXAMPLE
MS35821-6A OR MS35821-8D. WHEN
PROTECTIVE FINISH IS REQUIRED FOR "D"
MATERIALS, ADD F TO THE DASH NUMBER.
EXAMPLE
MS35821-8DF
AN-251 HINGES
AN-253 PINS
MS-20253 PINS
MS-27990 PINS
NAS-40 EXTRUDED
AN-252 EXTRUDED
AN-250 BUTTS
MS-7524 HINGES
MIL-H-1237 BUTTS
ALL HINGES CUT TO SIZE, PIERCED OR
FORMED TO PRINT.
