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Yellow zinc plated carriage Bolt

Product No.：2021115122920
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Product Name:	Round Head Carriage Bolt, also called Mushroom head square neck bolts or cup head square neck bolts.
Material	Stainless steel A2 A4,Carton Steel , Alloy Steel,Aluminum,Brass
Diameter & Grade	Inch Size	3/16"-1-1/4"	4.8, 5.8,6.8,8.8,10.9,12.9
	Metric Size	5mm-30mm	2, 5, 8, 10
Surface Finish :	Black ,Color Zinc ,Dacromet, HDG, etc
Standard:	DIN 603 - 1981 Mshroom head square neck bolts
	ANSI/ASME B 18.5 Round Head Square Neck Bolts
	BS 4933 Metric Cup Square Bolts
	JIS B 1171 Cup head square neck bolts（With indentation）
	ISO 8677 Cup Head Square Neck Bolts With Large Head
	ISO 8678 Cup Head Square Neck Bolts With Small Head And Short Neck
	BS 325 Black Cup Aquare Neck Bolts
	DIN 11015 Flat Countersunk Square Neck Bolts With Short Square

DIN 603 - 1981 Mshroom head square neck bolts

Screw Thread
d

P	Pitch
b	L≤125
	125＜L≤200
	L>200
d_k	max
d_k	min
d_s	max
d_s	min
k₁	max
k₁	min
k	max
k	min
r₁	≈
r₂	max
r₃	max
s	max
s	min

0.8	1	1.25	1.5	1.75	2	2.5
16	18	22	26	30	38	46
22	24	28	32	36	44	52
-	-	41	45	49	57	65
13.55	16.55	20.65	24.65	30.65	38.8	46.8
12.45	15.45	19.35	23.35	29.35	37.2	45.2
5	6	8	10	12	16	20
4.52	5.52	7.42	9.42	11.3	15.3	19.16
4.1	4.6	5.6	6.6	8.75	12.9	15.9
2.9	3.4	4.4	5.4	7.25	11.1	14.1
3.3	3.88	4.88	5.38	6.95	8.95	11.05
2.7	3.12	4.12	4.62	6.05	8.05	9.95
10.7	12.6	16	19.2	24.1	29.3	33.9
0.5	0.5	0.5	0.5	1	1	1
0.75	0.9	1.2	1.5	1.8	2.4	3
5.48	6.48	8.58	10.58	12.7	16.7	20.84
4.52	5.52	7.42	9.42	11.3	15.3	19.16

Weight of per 1000 steel products(≈kg)

ANSI/ASME B 18.5 - 2012 Round Head Square Neck Bolts,(Inch Series) [Table2] (A307, SAE J429, F468, F593)

Screw Thread
d

d
PP	UNC
d_s	max
	min
d_k	max
	min
k	max
	min
s	max
	min
k₁	max
	min

0.1900	0.2500	0.3125	0.3750	0.4375	0.5000	0.6250	0.7500	0.8750	1.0000
24	20	18	16	14	13	11	10	9	8
0.199	0.260	0.324	0.388	0.452	0.515	0.642	0.768	0.895	1.022
0.159	0.213	0.272	0.329	0.385	0.444	0.559	0.678	0.795	0.910
0.469	0.594	0.719	0.844	0.969	1.094	1.344	1.594	1.844	2.094
0.436	0.563	0.688	0.782	0.907	1.032	1.219	1.469	1.719	1.969
0.114	0.145	0.176	0.208	0.239	0.270	0.344	0.406	0.459	0.531
0.094	0.125	0.156	0.188	0.219	0.250	0.313	0.375	0.438	0.500
0.199	0.260	0.324	0.388	0.452	0.515	0.642	0.768	0.895	1.022
0.185	0.245	0.307	0.368	0.431	0.492	0.616	0.741	0.865	0.990
0.125	0.156	0.187	0.219	0.250	0.281	0.344	0.406	0.469	0.531
0.094	0.125	0.156	0.188	0.219	0.250	0.313	0.375	0.438	0.500

①,Minimum Thread Length:
The minimum length of thread shall be equal to twice the basic bolt diameter plus 0.25 in. for nominal bolt lengths of 6 in. or shorter, and twice the basic bolt diameter plus 0.50 in. for longer nominal lengths.
Bolts of nominal lengths too short to accommodate the minimum thread lengths shall be threaded full length. The length from the head or neck to the first complete (full form) thread shall not exceed the length of 2-1/2 threads for sizes up to and including 1 in., and 3-1/2 threads for sizes over 1 in.

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