MRL3212-10-550

Radial-Lok: Hole-filling blind bolt: radial expansion fills a clearance-fit hole from one side.

Family	Radial-Lok (Monogram)
Series	Radial-Lok (Monogram)
Head style	100° flush tension head (source: Drawing MRL3212 title block)
Nominal diameter	5/16" (-10)
Grip	grip range 0.500-0.550" (drawing Table II)
Material	Titanium. Nut: 6Al-4V titanium alloy; screw: Inconel 718; sleeve: 304 stainless steel; expansion sleeve: A286
Decode confidence	high
Numbering source	Monogram drawing MRL3212

Decode notes

MRL3210 and MRL3212 use different grip conventions (see each drawing's grip table); other MRL bases are not decoded.

Series & strength (datasheet)

MRL3210 (low profile protruding head) / MRL3212 (100° flush tension head) · e.g. MRL3212-06-500

Rated shear 75 KSI; 3/16" double shear 4,800 lb min, tensile 1,600 lb min; "up to .006\" via unique radial expansion": Monogram catalog comparison chart.

Datasheet (PDF) →

MRL3212 grip chart: 5/16" (-10)

Every catalogued max-grip dash number at this diameter. Stack thickness must fall inside the fastener's grip range: see the design calculators.

MRL3212-10-300 MRL3212-10-350 MRL3212-10-400 MRL3212-10-450 MRL3212-10-500 MRL3212-10-550 MRL3212-10-600 MRL3212-10-650 MRL3212-10-700 MRL3212-10-750 MRL3212-10-800 MRL3212-10-850 MRL3212-10-900 MRL3212-10-950 MRL3212-10-1000

Other diameters at this grip:

MRL3212-06-550 MRL3212-08-550 MRL3212-12-550

Sourcing

Lead-time risk for this family: High

Need a price or lead time?

Add MRL3212-10-550 to your RFQ package: one spec-complete request with certs, need-by and tooling, sent to whoever you choose.

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Decoded from the published numbering scheme; not a claim that this exact dash number is a stocked SKU, and not a certified design authority. Always verify against the controlling drawing, spec, and your stress group.