Parafuso Sextavado: Normal - Leve- Regular SAE graus: 2, 5 e 8 Rosca Parcial


* Marcação do grau  
REFERÊNCIA:
SAE J-105 e
ANSI B18.2.1-1981
TABELA 4
Diâmetro
Nominal
E
F
G
H
R
LT
L<ou=6" L>6"
Y
máx.
min.
máx.
min.
máx.
min.
máx.
min
máx.
min.
Básico
Básico
máx.
1/4"
6,350
6,223
11,125
10,871
12,827
12,395
4,140
3,810
0,635
0,381
19,050
25,400
6,350
5/16"
7,937
7,785
12,700
12,420
14,655
14,147
5,359
4,953
0,635
0,381
22,250
28,575
7,061
3/8"
9,525
9,372
14,274
13,995
16,510
15,951
6,172
5,740
0,635
0,381
25,400
31,750
7,924
7/16"
11,112
10,934
15,875
15,544
18,338
17,729
7,391
6,908
0,635
0,381
28,575
34,925
9,067
1/2"
12,700
12,522
19,050
18,694
21,996
21,336
8,204
7,670
0,635
0,381
31,750
38,100
9,779
9/16"
14,287
14,084
20,624
20,269
23,825
23,114
9,423
8,839
1,143
0,508
34,925
41,275
10,591
5/8"
15,875
15,671
23,825
23,418
27,508
26,695
10,236
9,601
1,143
0,508
38,100
44,450
11,557
3/4"
19,050
18,821
28,575
27,940
32,994
31,851
12,268
11,557
1,143
0,508
44,450
50,800
12,700
7/8"
22,225
21,996
33,324
32,639
38,506
37,211
14,300
13,487
1,651
1,016
50,800
57,150
14,122
1"
25,400
25,146
38,100
37,312
43,992
42,545
15,925
15,011
2,413
1,524
57,150
63,500
15,875
1.1/8"
28,575
28,295
42,875
41,427
49,504
47,218
18,237
16,713
2,413
1,524
63,500
69,850
18,135
1.1/4"
31,750
31,47
47,625
46,024
54,991
52,476
20,650
19,024
2,413
1,524
69,850
76,200
18,135
1.3/8"
34,925
34,620
52,374
50,647
60,502
57,734
22,301
20,574
2,413
1,524
76,200
82,550
21,158
1.1/2"
38,100
37,795
56,642
55,245
65,989
62,992
24,739
22,910
2,413
1,524
82,550
88,900
21,158
1.3/4"
44,450
44,145
66,675
64,465
76,987
73,482
28,803
26,771
2,413
1,524
95,250
101,600
25,400
2"
50,800
50,945
76,200
73,660
87,985
83,972
32,080
29,845
2,413
1,524
107,950
114,300
28,219
2.1/4"
57,150
56,845
85,725
82,854
98,983
94,462
36,144
33,705
2,413
1,524
120,650
127,000
28,219
2.1/2"
63,500
63,195
95,250
92,075
109,982
104,978
40,208
37,566
2,413
1,524
133,350
139,700
31,750
2.3/4"
69,850
69,545
104,775
101,295
120,980
115,468
44,297
41,452
2,413
1,524
146,050
152,400
31,750
3"
76,200
75,895
114,300
110,490
131,978
125,958
49,149
46,101
2,413
1,524
158,750
165,100
31,750

 

TOLERÂNCIA PARA COMPRIMENTOS "L"
Comprimento
Diâmetro Nominal
Até 1"

-0,762
-0,762
-0,762
---------
---------
---------
Acima de 1" até 2.1/2"
-1,016
-1,524
-2,032
-2,540
-3,048
-4,572
Acima de 2".1/2" até 4"
-1,524
-2,032
-2,540
-3,556
-4,064
-5,080
Acima de 4" até 6"

-2,540
-2,540
-2,540
-4,064
-4,572
-5,588
Acima de 6"

-4,572
-4,572
-4,572
-5,08
-5,588
-6,096

 

 

Podem ser fornecidos nos seguintes tratamentos superficiais:

Parafuso sextavado RP Zincado Eletrolitico (ZB Zincado Branco).

Parafuso sextavado RP Zincado Eletrolitico Amarelo (BC Bicromatizado).

Parafuso sextavado RP Enegrecido de Têmpera (PO)

Parafuso sextavado RP Galvanizado a Fogo (GF).

Parafuso sextavado RP Cadmiado (CAD).

Parafuso sextavado RP Fosfatizado (FOSF)

Parafuso sextavado RP Zincado Preto (ZP)

Parafuso sextavado RP Organo Metalico (OM) "Ruspert, Ecosil, Duracil, Dacromet, Geomet.."

VERIFICAR A TABELA DE COMPOSIÇÃO QUÍMICA DOS PARAFUSOS

OBS: 1-) Espessura da arruela sob a cabeça: para DN 3/4" e menores = 0,381 a 0,635mm, e para DN maiores que 3/4" = 0,381 a 0,889mm.
2-) ROSCAS: especificar - UNC/UNF/8UN/BSW/BSF