MS51038/NASM51038


FED. SUP CLASS
5305

APPROVED 7 MAY 1958   REVISED     (A) 29 JAN 1964 (B) 29 DEC 1972

MS21342 Fluted, Alloy, Cad Plated, Socket Set Screw
NOMINAL SIZE .060 .096 .112 .138 .164 .190 .250 .3125 .375 .500
THREADS PER INCH(_3A) 80
UNF
64
UNF
48
UNF
40
UNF
40
UNF
32
UNF
36
UNF
32
UNF
32
UNF
28
UNF
24
UNF
24
UNF
20
UNF
J SOCKET WIDTH
ACROSS FLATS
NOM .028 .035 .50 .062 .078 .094 .125 .156 .288 .250


Y CONE
POINT
ANGLE
118°+ 2° FOR
LENGTHS UNDER
90°+ 2° FOR
THESE LENGTHS
AND OVER
.078 .109 .156 .188 .250 .250 .312 .375 .438 .562
L LENGTH TOL DASH NUMBER
PLAIN PLAIN PLAIN SELF
LOCK
PLAIN SELF
LOCK
PLAIN SELF
LOCK
PLAIN SELF
LOCK
SELF
LOCK
SELF
LOCK
SELF
LOCK
SELF
LOCK
.094
.125
.156
.188
.250
.312

.375
.438
.500
.562
.625
+.010 1*
2*
15*
16*
17*
18*
19*
25*
26*
27*
28*
29*

101

102
103
104

105
106*
107
108*
109

35*
36*
37*
38*
39*

40*

41*

110

111
112
113

114
115*
116
117*
118


47*
48*
49*
50*

51*

52*

121*

122
123
124

125
126*
127
128*
129



58*
59*
60*

61*

62*

133*

134
135
136

137
138*
139
140*
141



144
145
146

147
148*
149
150*
151




157
158

159

160

161







169

170

171







179

180

181
.750
.875
1.000
1.250

1.500
1.750
2.000
+.020 119
120
130
131
132
142

143
152
153
154
155

156
162
163
164
165

166
167
168
172
173
174
175

176
177
178
182
183
184
185

186
187
188
2.500
3.000
+.031 189
190
  • Indicates for new design after 29 DEC 1972 (B)
    INTERCHANGEABILITY

    Effective 31 December 1960, MS51059 and MS51060 were cancelled and suspended by MS51038 and MS51039 respectively.

    Screws covered by the dash numbers given ini MS51039 are cancelled after 29 January 1964 and superseded by the srews covered on MS51039 having the same dash nuber. (MS51039-8-9 having no replacement.) Cancelled screw may be used until existing stocks are depleted. Use only MS51038 screws for new design.




(B) For changes see sheets 1 and 2.
P.A WC
Order Cust
82
TITLE
SERSCREW - HEXAGON SOCKET, CONE POINT,
CORROSION - RESIST STEEL, PASSIVATED,
UNC - 3A & UNC - 3B, PLAIN AND SELF-LOCKING
MILITARY STANDARD
MS 51038
PROCUREMENT SPECIFICATION
FF-S-200
SUPERSEDES MS18068, MS51059, MS51060 and in part
BCTx2.12, BCUx2, BCUx3 and BCUx4.3
SHEET       1       of       2
FED. SUP CLASS
5305

APPROVED 7 MAY 1958   REVISED     (A) 29 JAN 1964 (B) FOR CHANGES SEE SHEET 1 AND 2

NOTES:
  1. MATERIAL : Corrosion-Resisting steel, 300 Series, in accordance with procurement specification.
  2. PROTECTIVE COATING: Passivate in according with qq-p-35.
  3. THREADS: The threads shall be in accordane with MIL_S_7742.
  4. MAGNETIC PERMEABBILITY: These setscrews have a mangnetic permeability of 2.0 mx (air = 1.0) for a field strength of H = 200 aersteds, when using a magnetic indicator per MIL-I_17214.
  5. DIMENTIONS:All dimensions are in inches, unless otherwise specidied.
  6. PART NUMBER: The MS part number consists of the MS number, plus the dash number. Example: MS51038_101.
  7. SELF-LOCKING ELEMENT: The MS part number consists of the MS number, plus the dash number. Example: MS51038_101.


    (B)
    1. The self-lockingh element shall be in accordance with MIL-F-18240.
    2. For design and usage limitations, See MS15981.
    3. Location of effective loacking area shall be in accordance with MS51981.
    4. Maximum ring gage diameter that loacking region of serscrew must pass thru freely or with finger pressure shall be the nominal size pluse 0.010.
    5. MIL-F-18240 doesn't establis torque requirement for lengths above the dashed line. Only a positive indication of torque is required.
  8.   Referenced douments shall be of the issue in effect on date of invitations for bid.
  9.   For design feature purposes, this standard takes precedence over procurement documents referenced herein.











INTERCHANGEABILITY (Cont'd)

Screws covered by the dash numbers given ini MS18068 are cancelled.               Cancelled
Screw may be used until existing stocks are depleted. Use only superseding screws for new design. Replacement shall be in accordance with Table II.
TABLE II (B)
CANCELLED SUSPERSENDING CANCELLED SUSPERSENDING CANCELLED SUSPERSENDING CANCELLED SUSPERSENDING
MS18068 MS51038 MS18068 MS51038 MS18068 MS51038 MS18068 MS51038
DASH NUMBER DASH NUMBER DASH NUMBER DASH NUMBER
1
5
10
16
22
59

33
41
46
2
6
11

17
23
90
14
42
47

54
61
3
7
12
101
102
103
104
105
106

107
108
109
110
111
112

113
114
115
116
117
118

119
120
121
122
123
18
24
30
35
43
48

55
62
67
4
8
13

19
25
31
36
44
49

56
68
9
14
20
124
125
126
127
128
129

130
131
132
133
134
135

136
137
138
139
140
141

142
143
144
145
146
26
32
37
45
50
57

63
69
73
77
15
21

27
38
51
58
64
70

74
78
81
84
147
148
149
150
151
152

153
154
155
156
157
158

159
160
161
162
163
164

165
166
167
168
91
39
52
59
65
71

75
79
82
85
92
40

53
60
66
72
76
80

83
86
87
88
169
170
171
172
173
174

175
176
177
178
179
180

181
182
183
184
185
186

187
188
189
190
P.A WC
Order Cust
82
TITLE
SERSCREW - HEXAGON SOCKET, CONE POINT,
CORROSION - RESIST STEEL, PASSIVATED,
UNC - 3A & UNF - 3A, PLAIN AND SELF-LOCKING
MILITARY STANDARD
MS 51038
PROCUREMENT SPECIFICATION
FF-S-200
SUPERSEDES MS18068, MS51059, MS51060 and in part
BCTx2.12, BCUx2, BCUx3 and BCUx4.3
SHEET       2       of       2

Request for Quote

Fill Out the Form