MS51976/NASM51976


FED. SUP CLASS
5305

APPROVED 6 MAR 1964       REVISED (A) 31 MAR 1972

NOMINAL SIZE .086 .112 .138 .164 .190 .250 .3125 .375 .500
THREADS PER INCH (UNC_3A) 56 40 32 32 24 20 18 16 13
J SOCKET WIDTH
ACROSS FLATS
NOW .035 .050 .062 .078 .094 .125 .156 .188 .250
P POINT DIAMETER MAX
MIN
.057
.053
.075
.070
.092
.087
.109
.103
.127
.120
.156
.149
.203
.195
.250
.241
.344
.334
Q POINT LENGTH MAX
MIN
.024
.020
.030
.026
.038
.032
.043
.037
.049
.041
.067
.059
.082
.074
.099
.089
.130
.120
L LENGTH TOL DASH NUMBER
.188
.250
.312
.375
.500
.625
+.010 1*
2*
8*
9*
15*
16*
17*
18*

24*
25*
26*
27*
28*

34
35
36*
37*
38*

44
45*
46
47*


53
54
55*
56*



62
63
64*




71
72*
.750 +.020 65* 73*
(A)
  • Inactive for new design after 31 MAR 1972 .
    NOTES:
  1. MATERIAL : ALLOY STEEL IN ACCORDANCE WITH PROCUREMENT SPECIFICATION, HAVING A ROCKWELL HARDNESS OF C45-53
  2. PROACTIVE COATING: CADMIUM PLATED IN ACCORDANCE WITH PROCUREMENT SPECIFICATION.
  3. THREADS:THE THREADS SHALLL BE IN ACCORDANCE WITH MIL-S-7742.
  4. DIMENTIONS:ALL DIMENTIONS ARE IN INCHES, UNLESS OTHERWISE SPECIFIED.
  5. PART NUMBER: THE PART NUMBER CONSISTS OF THE MS NUMBER, PLUS THE DASH NUMBER.
    EXAMPLE: MS51973_1
  6. REFERENCED DOCUMENTS SHALL BE OF THE ISSUE IN EFFECT ON DATE OF INVITATIONS FOR BID.
  7. FOR DESIGN FEATURE PURPOSES, THIS STANDARD TAKES PRECEDENCE OVER PROCUREMENT DOCUMENTS REFERENCED HEREIN.
INTERCHANGEABILITY


(A)
Screws covered by the dash numbers given in MS51042 and MS 51044 are cancelled after 6 March 1964 and superseded by screws covered on MS51976 having same dash number. Cancelled screws may be used until existing stock are depleted. Use only the MS51976 screws for new design.
P.A WC
Order Cust
AS
82
TITLE
SETSCREW - HEXAGON SOCKET, HALF - DOG POINT,
ALLOY STEEL, CADMIUM PLATED, UNF - 3A
MILITARY STANDARD
MS 51976
PROCUREMENT SPECIFICATION
FF-S-200
SUPERSEDES MS51042, MS51044 and in part BCTX2.2, BCTX2.3, BCTX2.8, BCTX2.9, BCTX2.11 and BCTX2.14. SHEET       1       of       1

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