1 x Bolt Partial Thread Hexagonal Head 5/16X 3"1/2 Unc Or Bsw British Standard Whitworth Grade 5 Zinc Plated

1 x Bolt Partial Thread Hexagonal Head 5/16X...

1 x Bolt Partial Thread Hexagonal Head 5/16X 3"1/2 Unc Or Bsw British Standard Whitworth Grade 5 Zinc Plated

Name: 1 x Bolt Partial Thread Hexagonal Head 5/16X 3"1/2 Unc Or Bsw British Standard Whitworth Grade 5 Zinc Plated
Brand: Screw Express
SKU: 4127808902
Price: 3.04 GBP
Availability: InStock

Reference 4127808902_1

In stock 83 Pièces

£3.04 Incl VAT

Decreasing prices by quantity

Number of pieces	1	10	30	100
Lot price VAT included	£3.04	£15.32	£45.95	£153.29

ANSI B18-2-1, VS4126 - Bolt Partial Thread Hexagonal Head 5/16X 3"1/2 Unc Or Bsw British Standard Whitworth Grade 5 Zinc Plated1 inch = 25.4mm

Packaging

1 unit
10 units
30 units
100 units

Correspondence table inches and mm

Product Details

Diameter: 5/16 (7,938 mm)
Length

Length

How do I measure the length of a screw?

The length of a countersunk screw is measured with the head. For all other heads, the length is measured under the head.: 3"1/2 (89 mm)
Pitch: Pitch Unc EQUIVALENT BSW
Material: Steel
Coating: ZINC White
COLOR: Grey
Product Family: Bolts Hexagonal Head
Sub product family: Hex Head
WEIGHT For THERE unit: 45 GR
Number of threads per inch

Number of threads per inch

How to determine the diameter of a UNC or UNF screw:

The number of threads per inch will determine the diameter of the screw or nut of an American UNC or UNF screw.

Simply count the number of threads per inch (i.e. 25.4 mm) and refer to the table below.

For diameter 1 inch: 8 threads for 1 inch (25.4 mm) = UNC THREAD

Ø in inches

Ø in mm

Number of threads/inch in UNC

Number of threads/inch in UNF (fine pitch)

N°0

1.524

80

N°1

1.854

64

72

N°2

2.184

56

64

N°3

2.515

48

56

N°4

2.845

40

48

N°5

3.175

40

44

N°6

3.505

32

40

N°8

4.166

32

36

N°10

4.826

24

32

N°12

5.486

24

28

1/4

6.35

20

28

5/16

7.938

18

24

3/8

9.525

16

24

7/16

11.113

14

20

1/2

12.7

13

20

9/16

14.288

12

18

5/8

15.875

11

18

3/4

19.05

10

16

7/8

22.225

9

14

1”

25.4

8

14

1”1/8

28.575

7

12

1”1/4

31.75

7

12

1“1/2

38.1

6

12

1”3/4

44.45

5

-: 18

In stock 83 Items

EAN13 3663072082724

Description

Bolt Partial Thread Hexagonal Head 5/16X 3"1/2 Unc Or Bsw British Standard Whitworth Grade 5 Zinc Plated Other Reference : 3617500861931 3663072082724

Use Cases

Axel C. (vis-express.fr)
2025-09-07

To replace the suitcase mounting screws On a 2019 Harley Davidson Sportster

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Inches	mm	Inches	mm
1/8	3,2	2"1/4	57
3/16	4,8	2"1/2	64
1/4	6,3	2"3/4	70
5/16	8	3"	76
3/8	9,5	3"1/4	83
7/16	11	3"1/2	89
1/2	13	4"	102
5/8	16	4"1/2	114
3/4	19	5"	127
7/8	22	5"1/2	140
1"	25	6"	152
1"1/4	32	6"1/2	165
1"1/2	38	7"	178
1"3/4	45	8"	203
2"	51	9"	229
		10"	254

Ø in inches	Ø in mm	Number of threads/inch in UNC	Number of threads/inch in UNF (fine pitch)
N°0	1.524		80
N°1	1.854	64	72
N°2	2.184	56	64
N°3	2.515	48	56
N°4	2.845	40	48
N°5	3.175	40	44
N°6	3.505	32	40
N°8	4.166	32	36
N°10	4.826	24	32
N°12	5.486	24	28
1/4	6.35	20	28
5/16	7.938	18	24
3/8	9.525	16	24
7/16	11.113	14	20
1/2	12.7	13	20
9/16	14.288	12	18
5/8	15.875	11	18
3/4	19.05	10	16
7/8	22.225	9	14
1”	25.4	8	14
1”1/8	28.575	7	12
1”1/4	31.75	7	12
1“1/2	38.1	6	12
1”3/4	44.45	5	-