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304 Plum Blossom Anti-loose Screw

Name: 304 Plum Blossom Anti-loose Screw
Brand: Shenzhen Xintegu Hardware Co.,Ltd.

The 304 Plum Blossom Anti-loose Screw is a high-performance fastener designed to provide exceptional holding power and resistance to loosening in demanding environments. Constructed from 304 stainless steel, this screw boasts excellent corrosion resistance, making it suitable for use in a variety of settings, including marine, outdoor, and industrial applications. Its distinctive plum blossom drive offers increased contact points with tools, enhancing torque transmission and reducing the risk of cam-out. The anti-loose feature ensures that the screw remains securely fastened even under vibrations and dynamic stresses, ideal for machinery and structures requiring long-term reliability and maintenance-free operation.

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Specifications of 304 Plum Blossom Anti-loose Screw

Screw Thread (d)
P	Pitch
a	max
d_k	Theoretical	max
	Actual	max
		min
k	max
r	max
Socket No.
t	max
	min
B	max
x	max
Weight of per 1000 steel products(≈kg)
Length of Thread b		min

M6	M8	M10	M12	(M14)	M16	M20
1	1.25	1.5	1.75	2	2	2.5
2	2.5	3	3.5	4	4	5
12.6	17.3	20	24	28	32	40
11.3	15.8	18.3	22	25.5	29	36
10.9	15.4	17.8	21.5	25	28.5	35.4
3.3	4.65	5	6	7	8	10
1.5	2	2.5	2.5	2.5	3	3
T30	T40	T50	T55	T55	T60	T80
1.8	2.5	2.7	3.5	3.7	4.1	6
1.4	2.1	2.3	3.02	3.22	3.62	5.42
4.15	5	6.62	8.2	8.2	9.8	13
2.5	3.2	3.8	4.3	5	5	6.3
-	-	-	-	-	-	-
-	-	-	-	-	-	-

Key Features of 304 Plum Blossom Anti-loose Screw: Vibration Resistance & Corrosion-Free Durability

1. Advanced Vibration Resistance

Plum Blossom Head Design: The unique 5-petal "plum blossom" pattern on the screw head increases surface contact, enhancing grip and preventing rotational slippage.
Locking Thread Technology: Precision-cut threads create friction-based resistance, countering lateral forces from machinery, engines, or moving parts.
Tested Performance: Withstands vibrations up to 2,500 RPM in lab simulations (ASTM D3332 standards), making them ideal for automotive, aerospace, and industrial equipment.

2. Corrosion-Free Longevity with 304 Stainless Steel

Material Superiority: Grade 304 stainless steel contains 18% chromium and 8% nickel, forming a passive oxide layer that resists rust, chemicals, and moisture.
Environmentally Robust: Performs flawlessly in:
①Saltwater exposure (marine applications).
②High-humidity environments (food processing, pharmaceuticals).
③Chemical-rich settings (oil refineries, wastewater plants).
Certified Durability: Meets ASTM A276 and ISO 3506 standards for corrosion resistance and mechanical strength.